This version has all of the content of the Steam demo, but works without Steam. However, it misses all features that require Steamworks services:
No automatic updates
No cloud saves
If you later buy the full version, you'll have to create a new character.
Added 9 new clothing items.
Defense units now have a grey name & outline when they are inactive due to cooldown.
The reticle for precision turrets is now significantly larger so it's not as easy to lose sight of in the heat of battle.
Fixed sleep button to show up in doomsday mode.
Fixed a bug that sometimes prevented spiders from taking damage when they get teleported into an area attack (like energy flash, frost shock, blast wave, etc).
Fixed a bug that sometimes caused spiders to get stuck after they got caught in a trap.
Fixed a bug that made the health bar sometimes show an animation when you equip or remove Flash Healing.
Fixed a bug that made the minimap place the range indicator for the aimed attack (red line) at a slightly incorrect position.
If you've installed one of the previous versions, the installer will automatically upgrade it to the new version. Otherwise the installer creates a fresh installation. Characters created with version 7938 or later get imported automatically. Characters created with older versions won't load due to a new file system.
operating system: Windows 7 or later (Vista should work as well, but is untested as of now)