Sven Co-op

Sven Co-op team

Released: Jan 22, 2016
Platforms: WindowsLinux
Last updated: 04 Sep 2026, 16:42 GMT

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20 posts

18 Feb 2025Developer post
Quick 5.27 Progress Update
Here's an early look at some upcoming features in 5.27! Brush entities, players, NPCs, and other in-game objects can now receive dynamic lighting based on their location in a more realistic manner. This system uses light probes placed throughout the world, offering a performant s
07 Dec 2024Developer post
Sven Co-op Update Released [Build 16648734 / Release 5.26]
We're excited to announce a brand-new update packed with bug fixes, improvements, and exciting new features, including a fresh map for you to explore. We've been hard at work enhancing this long-running project since 1999, and we hope the (3 year) wait has been worth it. So what'
We're excited to announce a brand-new update packed with bug fixes, improvements, and exciting new features, including a fresh map for you to explore. We've been hard at work enhancing this long-running project since 1999, and we hope the (3 year) wait has been worth it.
So what's new? Let's dive in!
Introducing "The Mustard Factory" - a challenging new map where you and your team must operate a series of machines to produce mustard, all while fending off sabotage attempts by rival gangsters and closing rifts that allow inter-dimensional creatures to invade our world.
Watch on YouTube
This complex map requires strong coordination, so it's highly recommended to start on beginner mode to master the game mechanics and familiarise yourself with the layout. A public beta was previously released, but this new version contains significant improvements.

In addition, the classic SC map, Polar Rescue, has received a significant update, including a visual timer and many aesthetic improvements. Have a gander at these screenshots:

What else is in this update?

Significant map updates:

Multiple critical map fixes: Fortified and Dead Simple Neo 2 in overload mode were previously un-winnable.
Improvements to the Half-Life campaign, including fixing a blocker in the Lambda Core chapter.
Other map improvements. (See the full change log for details.)
Major overhaul to heavy weapons grunts. (See the full change log for details.)

Overhaul of the checkpoint system in Survival mode. Among other improvements, checkpoints can no longer be used unless someone is dead, preventing the checkpoint from being wasted.

Players can now be voice muted without having to block text chat too.

Significant quality of life updates to Svencraft map editor.

Improved the mechanics of MADWHACK (our Sven Co-op physics system), to make shotgun and explosive attacks more impactful.

Added auditing to player spray uploads: Provides info to the server operators about the player who uploaded the file. (See the full change log for details.)

New "func_vehicle" native entity: Maps using the native entity will have smoother moving vehicles.

Brought back borderless window option.

New "trigger_observer" script entity: Allows a mapper to put a player into observer mode arbitrarily.
For the curious people who like to watch videos, we have two short videos of the MADWHACK improvement and a fix for glitchy movement of NPCs when being pushed:
https://www.youtube.com/watch?v=5nqAeAX0ApA
https://www.youtube.com/watch?v=DPaQo6LwvPA
An update for Sven Co-op has been released. If you are running a dedicated server please use SteamCmd to update your servers. Those of you that were using the public release candidate can remain to do so, as this branch now matches the standard branch.
View the full change log
Version details
Steam build ID numbers: Game 16648734, dedicated server tool 16648738, SDK tool 16648739.
Please use the steam build ID number as a reference when posting an issue or query on our message boards. You can find the build number you currently have within Steam by right clicking our game or tools, selecting Properties, then selecting the Local Files tab.
Original post
01 Apr 2024Developer post
Sven Co-op May Be Removed From Steam! (April Fools)
Greetings fellow Co-opers! I have dire news to share. We have received a cease-and-desist letter from a competing development team by the name of "NIMTEMDO" accusing us of unspecified artistic copyright violations. We may be required to remove the game from Steam in order to comp
17 Dec 2023Developer post
Would you like some salt with your RAGE?
For over a decade now a collaborative community mapping project, Ragemap , has been providing us with wacky puzzles, challenges, and themes since 2007 from a broad range of talented mappers, content artists, and scripters. In recent years this project has become a more regular an
01 Apr 2023Developer post
AI moving Sven Co-op forward (April fools)
Good news everyone! Big progress on Sven Co-op is being done behind the scenes. And we have Sven Viking to thank for it. Let me explain. Some may be aware that a while back Sven Viking moved on from Sven Co-op and on to other things. While we respect his choice, Sven Co-op has sa
04 Dec 2022Developer post
Ragemap has put its foot down
For over a decade now a collaborative community mapping project, Ragemap , has been providing us with wacky puzzles, challenges, and themes since 2007 from a broad range of talented mappers, content artists, and scripters. In recent years this project has become a more regular an
01 Apr 2022Developer post
Sven Co-op beaten in 33:12 with 100% completion (April fools)
Hello Sven Co-op fans! I recently received an extraordinary video recording of the fastest completion of Sven Co-op to date, with 100% completion and no tool assistance. The video was sent to me by a player named SpacevikingLover and i must say, I am thoroughly impressed. I will
11 Sep 2021Developer post
Sven Co-op Update Released [Build 7342106 / Release 5.25]
Hello everyone, it's been a while since we last gave you an update. That hot fix is from January has become a Baked Alaska refrozen! As usual we're back with a much bigger package than expected. hehehe Big thank you to everyone that took part in the release candidate testing. We
Hello everyone, it's been a while since we last gave you an update. That hot fix is from January has become a Baked Alaska refrozen! As usual we're back with a much bigger package than expected. hehehe
Big thank you to everyone that took part in the release candidate testing. We feel that this added value to the finalisation of this release, and as with the previous successful round, will continue to take this approach.
First and foremost, the cart in the test chamber of Anomalous Materials can be pushed into the beam again!
Black Mesa Special Tactics Sector (BM_STS), level by Trempler, has been updated with ~NEW HUD ART~ and ~NEW GAME MODES~ and ~REBALANCED GAMEPLAY~ (courtesy of Levi).

Polar Rescue, level by Adambean, has been updated to add ~EXTREME DIFFICULTY MODE~.

If you are running a dedicated server please use SteamCmd to update your servers. Those of you that were using the public release candidate can remain to do so, as this branch now matches the standard branch.
Important: Linux users, particularly server operators, may need to manually install OpenSSL's 1.1 library. To do this on Debian and Ubuntu you can do so with command: apt install libssl1.1:i386 as root (or prepend "sudo").
Changes are as follows:
Notable changes

The cart in the test chamber of Anomalous Materials can be pushed into the beam again!

Black Mesa Special Tactics Sector (BM_STS), level by Trempler, has been updated with ~NEW HUD ART~ and ~NEW GAME MODES~ and ~REBALANCED GAMEPLAY~ (courtesy of Levi).

Polar Rescue, level by Adambean, has been updated to add ~EXTREME DIFFICULTY MODE~.

Code
Game library

Added support for "waterlevel" property keywords DRY (0), FEET (1), WAIST (2), and HEAD (3). (Applies to entities such as "trigger_condition" when reading "entvars" structure.)

Added event triggers "on start" and "on stop" to doors (apart from momentary), platforms, and (platform based) trains. Usable with "fireonstart" and "fireonstop", these work similar to door "on opened", "on opening", etc.
Classic Mode: Small tweak to ItemMapping for letting the target/targetname values be carried over from replaced entities to the newly created replacements. This prevents mapper-assigned item collection triggers from breaking when classic mode is activated and the item in question gets replaced.

Entity "env_explosion" effect now uses the underwater effect if the entity is submerged.

Entity "func_breakable" CLASS_PLAYER is now part of the set of classifications that can be repaired by players.

Entity "trigger_camera" will no longer switch off for all other players using it if just one player disconnects whilst using it.

Fixed a crash at the end of a map caused by "item_inventory".

Fixed a null pointer dereference for squad talking monsters.

Fixed a null pointer dereference when changing levels (by "trigger_changelevel") if the other "touching" entity was undefined.

Fixed corpses sometimes flying upwards whilst dying climbing a ladder.

Fixed orientated sprites requiring 360 to be specified in angles that were intended to be zero due to a strange legacy Worldcraft workaround. (Doesn't apply to sprites using "default" orientation.)

Fixed players healing and repairing enemies when using the non-targetable flag.

Removed 2 unit lip adjustment from buttons and doors. (The engine no longer expands brush sizes by 2 units.)

Removed false warning in "trigger_createentity" for "delay" and "killtarget" keys.

Take damage functionality will now merge with the god mode flag earlier to apply invulnerability more robustly when desired, particularly when modified at runtime (e.g. with a "trigger_changevalue" or "trigger_copyvalue").

AngelScript

Fix crash when calling `GetClassificationName()` and `GetClassificationTag()` from AngelScript.

Engine

Corrected case sensitive directory, "GamEUI" should have been "GameUI".

Fixed out of bounds crash caused by the speak command.

Increase CVOXFILESENTENCEMAX to 2048. (This is only a temporary change to address a crash that occurs due to the "sentences.txt" being maxed out.)

Tweaked Windows dedicated server EXE compiler options to reduce false positive trojan detection.

Water fog colour is now calculated by checking the current water volume the player is in, instead of by last drawn water poly surface.

Non-playable characters

Added dead prop entities for Gonome "monster_gonome_dead" and clean-suit scientist "monster_cleansuit_scientist_dead".

Fixed M203 grenade launcher ammo dropped from NPCs (by "npc_dropweapons") respawning as if its a regular map entity. (The drop should only be collectable once.)

Fixed chumtoads not following their owner.

Gargantua: Fixed prey catching animations (GARG_AE_PICKUP_PREY and GARG_AE_BITE_KILL_PREY) preventing the Gargantua from completing a scripted sequence if these animations were being called by the script.

Houndeyes now support global and individual "monster roaming" settings:

Behaviour for global properties:

Roaming monsters option is 0 (No): monster_houndeye will roam if its AI chooses to do so (default Half-Life behaviour), unless its "Monster Roaming" option is set to 1 (never).

Roaming monsters option is 1 (Yes): monster_houndeye will always roam, unless its "Monster Roaming" option is set to 1 (never).

Behaviour for individual properties:

Monster roaming option is 0 (Map Default): monster_houndeye will roam if the Map properties "Roaming monsters" option is 1 (Yes). Otherwise, its AI decides (default Half-Life behaviour).

Monster roaming option is 1 (Never): monster_houndeye will never roam.

Monster roaming option is 2 (Always): monster_houndeye will always roam.

NPCs that are too far away from their "func_tank" will now stop control and end their task.

Scripted NPCs will no longer fall if the "Instantaneous" option moves them far enough above the ground

If "Instantaneous" is selected for a scripted_sequence's "Move to Position" option, a trace line is performed to search for the ground at a distance equal to the NPC's height.

If the ground isn't detected, MOVETYPE_FLY is set early for the "Idle Animation". Previously, MOVETYPE_FLY was only set for the "Action Animation".

This change was needed because the engine now performs more regular FL_ONGROUND checks, leading to a more accurate physics simulation.

Voltigore: Adjusted the friendly fire damage nullification conditions to rely on `IRelationship` rather than the `m_fIsPlayerAlly` flag. This allows Voltigores to inflict melee attack damage against other Voltigores regardless of what classifications they use as long as they aren't allied, i.e. the relationship between them is R_NO or higher.

Weapons/Items

Crossbow:

Set the removal think function, rather than remove the crossbow bolt immediately. This allows for the crossbow bolt to consistently push MOVETYPE_PUSHSTEP objects.

Set velocity to zero as a last step to fix explosion position.

Bolts can now push MOVETYPE_PUSHSTEP entities on impact.

Velocity is no longer cleared if a crossbow bolt touches a MOVETYPE_PUSHSTEP entity (e.g. func_pushable). Misc. code standards updates.

Shock rifle secondary fire will now properly check the classification of the target so that only allies have their HEV charged.

Shock rifle drop direction fixed.

Maps
Black Mesa: Special Tactics Sector

Added new script for less stuck NPCs.

Added new script for round timer, which also replaces the old sprites.

Added new secret.

Added new spawn sprites for the Gargantua survival bonus round.

Added new visuals for monster HP and tech level.

Added spectator support:

Players who want to idle or just want to watch can join spectator mode.

You can also leave it by pressing tertiary attack (throw crowbar) "+alt1".

Added super round support:

Re-rolls and resets all samples and scores of all teams when a team is about to win.

Added an option to disable bonus rounds.

Added an option to disable super rounds.

Added spectator mode portal.

Changed the layout of the yellow lab arena.

Corrected misaligned textures.

Fixed the Gargantua survival bug where Gargantuas could stay alive when the bonus round ends.

Fixed the dead end bug in the find maze bonus game.

Fixed the skylight / sky texture bugs.

Fixed the suicide exploits of all survival bonus rounds.

New timer sprite displayed in the player HUD.

Reworked the monster spawn system, better placement.

Reworked the skill settings for the map.

CTF Warforts

Added new gag soda machine.

Class balance changes.

Deployable turret models now use full-bright rendering for the floating team icon.

Fixed exploit with Operative class, where users could remain stealth while running at full speed.

Fixed issue where weapons were retained between rounds, most problematically the long jump module.

Flanker nerf adjusted: Long jump removed, dual Uzis swapped for single Uzi, and base speed increased and gravity reduced.

Players may no longer carry an enemy flag into their own spawn, preventing potential griefing by refusing to leave and being safe from harm.

Removed alien mercenaries from the side bunker.

Texture fixes.

Half-Life Campaign

HL_C07_A1: Recompiled (legacy clip nodes) version to fix problem with jumping out of water in certain areas.

HL_C07_A1: Fixed the change level point needing to be used manually.

Polar Rescue

A very long overdue update...

Added comprehensive materials definition for those noice footstep atmospherics.

Added extreme difficulty: Effectively the same as hard mode, but with survival mode enabled. Super unfair.

Added fire escape stairs beside the elevator shaft.

Top floor blocked with sandbags, needs a high explosive detpack from the bottom floor to clear them.

Can act as an alternative route to hostage refuge should the lift be unsuitable.

Changed camera objects to a dome camera model.

Changed how the security station on the ground floor is accessed.

Changed rock netting at the start to be breakable, so you can see what you need to shoot inside.

Changed secret with a cool sound model.

High definition objective sprites. (Constantly remind Hezus that I stole and re-factored his SnD script to do this.)

Huge redesign to the command centre: No longer a silly office.

Huge redesign to the nuclear reactor: Really gigantic. Seriously.

Lots more hint sprites. People love hint sprites.

Minor redesign to the radio room.

Minor redesign to the security station.

Zillions of tweaks nobody cares about blah blah.

They Hunger

E2M1: Increased height of picnic table by 2 units. Fixes players not being able to jump over the gate when standing on top of it.

Misc
Textures

lcd_display.wad: Updated with new high definition numerals and LCD screens.

Other

Linux game client launcher: Fixed a issue where the Linux game launcher script ignores first and last parameter. This also fixes another issue where a parameter with quoted value would get its value ignored. (E.g. "-game "ns")

Version details
Steam build ID numbers: Game 7342106, dedicated server tool 7342110, SDK tool 7342111.
Please use the steam build ID number as a reference when posting an issue or query on our message boards. You can find the build number you currently have within Steam by right clicking our game or tools, selecting Properties, then selecting the Local Files tab.
Original post
01 Apr 2021Developer post
Sven Co-op 5.25: Collector's Edition
The release of Sven Co-op version 5.25 marks a very important milestone in the development of the game. As many of you know, Sven Co-op's development started all the way back in 1999 and we would like to honour that legacy by creating a very special COLLECTORS EDITION of our late
24 Jan 2021Developer post
Sven Co-op Update Released [Build 6130701 / Release 5.24]
An update for Sven Co-op has been released. If you are running a dedicated server please use SteamCmd to update your servers. Changes This is for the most part a minor update to correct a few quirks from the 5.23 Christmas release, particularly with pushable and liftable solid ob
An update for Sven Co-op has been released. If you are running a dedicated server please use SteamCmd to update your servers.
Changes
This is for the most part a minor update to correct a few quirks from the 5.23 Christmas release, particularly with pushable and liftable solid objects.
You can find the full change log on our Wiki.
Support requests
As with any release please do not use the comments thread to report an issue or request support. This is very easily missed, so to get an answer as promptly and detailed as possible please submit your issue or query to any of the following channels:

Game hub discussions
Discord
Version details
Steam build ID numbers: Game 6130701, dedicated server tool 6130704, SDK tool 6130705.
Please use the steam build ID number as a reference when posting an issue or query on our message boards. You can find the build number you currently have within Steam by right clicking our game or tools, selecting Properties, then selecting the Local Files tab.
Original post
24 Dec 2020Developer post
Sven Co-op Update Released [Build 6008644 / Release 5.23]
An update for Sven Co-op has been released. If you are running a dedicated server please use SteamCmd to update your servers. Search 'n Destroy First and foremost , Hezus has built a brand new map "Search 'n Destroy", featuring a combination of assault and territory control style
An update for Sven Co-op has been released. If you are running a dedicated server please use SteamCmd to update your servers.
Search 'n Destroy
First and foremost, Hezus has built a brand new map "Search 'n Destroy", featuring a combination of assault and territory control styles of game play with up-to 4 playable classes to choose from.

Vote to play one of four difficulty levels based on your teamwork and toughness.

Please have a play with any amount of players and let us know what you think. -- The map's difficulty will dynamically adjust according to the player count. Beware that a late joiner on insane difficulty will use up the single spare ticket though, so be sure to have at least one medic playing.

Changes
Notable changes are as follows:

New map: Search 'n Destroy, by Hezus
Do not expose values of protected CVARs in auto-completion (e.g. "rcon_password"), show "***PROTECTED***" instead.
Fixed server browser not showing any results immediately after updating video settings. (No longer requires game to be restarted.)
RPG rockets are now flagged to not collide with allies by relationship. (E.g. players firing their RPG no longer need to worry about suicide due to another player running in front of them.)
You can find hundreds of more changes in the full change log on our Wiki.
Support requests
As with any release please do not use the comments thread to report an issue or request support. This is very easily missed, so to get an answer as promptly and detailed as possible please submit your issue or query to any of the following channels:

Game hub discussions
Discord
Version details
Steam build ID numbers: Game 6008644, dedicated server tool 6008647, SDK tool 6008648.
Please use the steam build ID number as a reference when posting an issue or query on our message boards. You can find the build number you currently have within Steam by right clicking our game or tools, selecting Properties, then selecting the Local Files tab.
Original post
27 Nov 2020Developer post
Steam Award 2020 Nomination Request
Ladies, gentlemen, eels, seagulls, amorphous eldritch horrors, The Steam Awards are upon us once again. We kindly request your nomination for the Labor of Love award (link attached). Sven Co-op, the very first modification to the epic game "Half-Life", has been in production for
02 Apr 2020Developer post
Rent-A-Map™ with Time-Share® CANCELLED!!!
Yesterday we announced our new Rent-A-Map™ feature and the initial reactions were great! Paying a small fee to support development for something you could have used for free otherwise seemed to really inspire our playerbase. However, it also inspired a bunch of lawyers to send us
01 Apr 2020Developer post
Sven Co-op is excited to announce: Rent-A-Map™!
We here at Sven Co-op work hard on new engine and gameplay features to bring you the best possible co-operative experience. However, we have been having a hard time delivering new official maps with our releases. We only want to give you the AAA+ material you good people all dese
16 Jan 2020Developer post
Sven Co-op Update Released [Build 4566677 / Release 5.22]
An update for Sven Co-op has been released. If you are running a dedicated server please use SteamCmd to update your servers. Changes Notable changes are as follows: Fix for Windows 10 users using different DPI scales per-monitor Increased maximum weapons to 256 You can find the
An update for Sven Co-op has been released. If you are running a dedicated server please use SteamCmd to update your servers.
Changes
Notable changes are as follows:

Fix for Windows 10 users using different DPI scales per-monitor
Increased maximum weapons to 256
You can find the full change log on our news.
Support requests
As with any release please do not use the comments thread to report an issue or request support. This is very easily missed, so to get an answer as promptly and detailed as possible please submit your issue or query to any of the following channels:

Game hub discussions
Official message board
Discord
Version details
Steam build ID numbers: Game 4566677, dedicated server tool 4566690, SDK tool 4566691.
Please use the steam build ID number as a reference when posting an issue or query on our message boards. You can find the build number you currently have within Steam by right clicking our game or tools, selecting Properties, then selecting the Local Files tab.
Original post
01 Jan 2020Developer post
Sven Co-op Update Released [Build 4534884 / Release 5.21]
Changes Notable changes are as follows: Black Mesa: Special Tactics Sector, level by Trempler, now has a serious balance fix. (No more red team permanently winning!) Suspension, level by Hezus, now features night mode! Level designers can now change the sky with new entity "trigg
Changes
Notable changes are as follows:

Black Mesa: Special Tactics Sector, level by Trempler, now has a serious balance fix. (No more red team permanently winning!)
Suspension, level by Hezus, now features night mode!
Level designers can now change the sky with new entity "trigger_changesky".
Map Compile Tools: Default subdivide value has been increased to 528. This improves world polygon subdivision on all maps, which increases frame rates, and opens the possibility for utilization of 512x512 textures without excessive subdivision.
Important: Dedicated server operators running on Windows must install the Microsoft Visual C++ 2019 (x86) re-distributable package. This is available for free here: https://support.microsoft.com/en-gb/help/2977003/the-latest-supported-visual-c-downloads
You can find the full change log on our news.
Version details
Steam build ID numbers: Game 4534884, dedicated server tool 4534885, SDK tool 4534886.
Please use the steam build ID number as a reference when posting an issue or query on our message boards. You can find the build number you currently have within Steam by right clicking our game or tools, selecting Properties, then selecting the Local Files tab.
Original post
06 Nov 2019Developer post
New Team Members & Forum Updates
New Team Members We're starting to ramp up for the Sven Co-op 5.21 release, and so, we've added a few more people to our team to help us get there. Please join me in welcoming Omega (Programming), KernCore (Art and Scripting), DNIO071 (Art), The303 (Art), and MrOats (Testing)! Om
25 Sep 2019Developer post
Coming up in 5.21: Entity "trigger_changesky"
We have completed a new entity (and engine interface) for mappers: "trigger_changesky", allows you to change the sky map at runtime. Demonstration:
24 Aug 2019Developer post
Coming up in 5.21: Support for BSP subdividing of 512 up from 240
Coming up in 5.21: Support for BSP subdividing of 512 up from 240, resulting in significantly less WPOLY requirements for big surfaces. Less WPOLY = more FPS + bigger maps! Compile comparison: Wireframe comparison:
22 Jul 2019Rock, Paper, Shotgun
Modder Superior: Sven Co-op
Every other Monday, Dominic gives you a reason to dust off one of your old games and dive into its mods with Modder Superior. We’ve seen how much damage one theoretical physicist can do. Sven Co-op lets you unleash the vortex of chaos of a dozen Free Men (and women) upon Half-Lif