-Improved effects for missiles, tactical nukes, autocannon, flak cannon, howitzer and railgun (plus a few enemies).
-Fixed a bug that made explosions not apply physics force.
-Fixed some problems with joining LAN games through the browser.
-Made radioactive zone and deep space look nicer.
It's now possible to launch the game by clicking join game from people who are in servers on your steam friends list. It doesn't work doing it from the in game overlay yet, only if you're not running the game when you start (it's using command line args).
-Missiles have better AI.
-Some tweaks to weapon balance, enemy stats and enemy spawns.
-Multiplayer menus now give a bit more info about whether your server will be easy to connect to (if you're hosting) and an error log when you try to join games and it doesn't work (if you're joining).
-Made custom mouse input to help ensure that the player never accidentally clicks outside the game.
-Controller detection tweaked to reduce the chance of the game thinking you're using one when you aren't.