Mysteria ~Occult Shadows~

U-Secret Studio

Released
Sep 29, 2020
Platforms
Windows
Last updated
Wishlist on SteamAdd it on the Steam store page. Opens in a new tab.

Updates & announcements

20 posts
  1. Developer post

    HD Point Shop Items Now Available! New Game on Autumn Sale at Lowest Price

    With the previous experience from creating items for "Mysteria Beast Girls", this time we’ve made even higher-quality Point Shop items for our new title "Rebellion Godsoul" ! ✨ Seamless Loop · Ultra HD ✨ Visuals fully upgraded, making your collection more perfect than ever! View

  2. Developer post

    [Important] Beautiful animated avatars and backgrounds are now available

    Dear Beastgirl fans: We've quietly added new items to the Steam Points Shop—now you can reunite with those beautiful fantasy scenes once again! If you're interested, feel free to decorate your Steam profile and keep the charm of the beastgirls with you! The developer’s new title

  3. Developer post

    Click to Get Ultra HD Swimsuit Wallpaper + New Release on Summer Sale!

    Dear Mysteria fans, long time no see~ Here's a high-res swimsuit wallpaper of our beast girls! Although we no longer own this IP, we sincerely thank you for your past support. Please accept this wallpaper as a small token of joy. This artwork was commissioned by our devs personal

  4. Developer post

    Our all-out new game is crowdfunding on Kickstarter.

    Our new game, Rebellion GODSOUL, is currently crowdfunding on Kickstarter~ This game is the sole intellectual property of our development team (u-secret studio), and we've spent 3 years developing it with all our efforts. It features many beast-ear girls with dynamic illustration

  5. Developer post

    new discord link

    welcome join our discord~have some cute wallpapers!

  6. Developer post

    Discord channel And Wallpaper

    "Dear Players, we are the developers from U-Secret Studio. Long time no see, we have created a Discord channel and welcome everyone to join the conversation. Join our Discord channel at We also have a few wallpapers for you. Mobile Wallpaper 1 features 'Misu', an AI cat girl from

  7. Developer post

    【有福利】终秘计划开发组新作GAL《夏恋幻梦》将于8月19日发售!

    新作GAL《夏恋幻梦》将于2022年8月19日发售! 亲爱的兽娘玩家,我们是U-Secret Studio(终秘计划) 开发组,始终记得兽娘玩家的支持, 这次我们的GALGAME新作《夏恋幻梦》即将在2022年8月19日发售啦, 来做一点活动~ 我们做了以下活动: ※※※※“赛勃喷蝌”泳装兽娘壁纸活动※※※※ 现在加《夏恋幻梦》的QQ群735530840 直接可以领取:“赛勃喷蝌”风格泳装米雪儿高清壁纸 将《夏恋幻梦》添加到愿望单,愿望单截图私聊管理“樱小喵”或者“stan”,可以领取 2张“赛勃喷蝌”风《夏恋幻梦》兽耳娘泳装高清壁纸 1张“赛勃喷蝌”风

  8. Developer post

    Happy Children's Day! fan art reprint

    Happy Children's Day! Integrate a wave of fangirls created by netizens! Hope it brings you some happiness~ The new work GODSOUL also continues to seek attention & wish list, there will be a trial play this year *The new work is still a buyout game~ The new work is a cyberpunk

  9. Developer post

    HD pillow picture+ new RPG "GODSOUL" PV

    Dear MYSTERIA player, here is a picture of a pillow drawn by the "Mango Cat" ! Mango cat is also the art director/character designer of the new work "GODSOUL"~ I once painted the popular wallpaper "Distant Miracle" and "Double God Cat" in the later stage of the MYSTERIA You are a

  10. Developer post

    2nd Anniversary of Mysteria Free Wallpaper

    It has been two years since Mysteria was released, I'd like to thank all of your for your company and encouragement. Here's a wallpaper that I'd like you all to have. It's in 4K for desktop and 2k for phones. Link: The original pic is in 1954*3507, you're allowed to print it but

  11. Developer post

    MYSTERIA V1.0 Launch Update

    MYSTERIA~occult shadows has finally comes to the official release thanks to all of you. To express our excitement and appreciation, here's some free stuff for all of you! There are over 10 free DLCs including the previous ones! 5 new FREE costume DLCs: Nano Combat Suit (Dark) Mys

  12. Developer post

    MYSTERIA Ver.1.0 Pre-release Update

    Update Content: 1. Optimized the English and Japanese localization. 2. Regular bugfixes and optimizations.

  13. Developer post

    A Statement About Ending Early Access

    Thank you for your constant support! The EA4.0 version of Mysteria~Occult Shadows~ was just updated. And there has been a bifurcation between the developer - U-Secret Studio and us on whether the EA4.0 version has reached the standard of a formal release. As a product provider, w

  14. Developer post

    EA Version 4.0 Update

    Hellow my fellow gamers! Afte months of repolishing the game, it's finally ready for EA4.0. The story is now complete, thank you for the wait and the support! Important Updates: Updated the final new part of the story, 2 levels, the final boss and ED. Performance optimizations, e

  15. Developer post

    Recent Thoughts on Future Update

    Hey guys! Long time no see! As we gradually reach the end of the whole development, we've only got a few more steps to go. The script is one big update away from finished, which will include the final boss and ED animation. We've done making the final boss and are optimizing the

  16. Developer post

    EA Version 3.00 Update

    My fellow gamers~EA version 3.00 is live now! Thanks a lot for your support! Important Update Added new levels: "Elia Castle Latter Half", "Babylon" Extended the storyline Added the boss fight against the Ragdoll Cat Michelle Added New Weapon Skin: Starry Night Sword Added New We

  17. Developer post

    EA2.50 Fatal Bug Fixed

    Hey guys! Sorry for the delay! The bug regarding the crystal is now fixed. Due to recent even I wasn't able to do any actual work, but now I'm back at it! Thank you for all of your support! Cat

  18. Developer post

    EA2.50 Version Update Note

    Thanks to all your suppoort during this dark time, we're back unharmed and more ready to face the challenge than ever! But still, we apologize for the lack of updates for the past a month or so due to the outbreak of the COVID-19. Here's wallpaper that I drew the other day for al

  19. Developer post

    EA2.10 Version Update Note

    Hey guys, I'm here to bring you guys the EA2.10 Vesion Update. This update is more of a transitioning one focusing on optimization and system integration rather than adding more content. The 2.5 version will have more content but we have no choice but to push it back due to recen

  20. Developer post

    Update Note EA2.01

    Hey guys! EA 2.01 version is here! Charge attack will hit the direction as you guide The HP bar will show when an enemy is locked. Fixed the bug that sometime the number is wrong is dark mode. Increased the brightness of the enemies in the dark. Fixed the bug that caused you not