Improvements over 2.0 and tons of new content, such as new aliens, new weapons, new maps, new base facilities, new research options and better....
2.1 Changelog:
* First significant steps towards implementing the storyline.
* Dozens of new, in-depth UFOpedia texts and descriptions.
* New maps
o industrial, estate, bridge, oriental
* New weapons
o Micro Shotgun, Machine Pistol, Heavy Laser Rifle
* New alien race (Shevaar)
* Many new and updated models, sounds and music tracks
* Multiplayer
o Heavily improved multiplayer support
o Master server
* Improved the engine to make it more stable and portable
* Base management
o Implemented alien containment
o Base transfers partially implemented
o Finally implemented the hospital
* Combat
o New popup menu when firing/using a gun.
o Weapons can now have more than 2 firemodes.
* Lots of bugfixes