The full list of fixes and tweaks runs well over 2000, you can view the long patch note list here, which runs the gamut from optimization to fixing small and large bugs to expanding the game's content. We also updated the beta's reference card and expanded it a little bit. As a reminder, this update will break existing save games. The most immediate difference you'll notice will of course be the updates character and inventory screens. Other than just looking better the new inventory adds a lot of functionality such as an all-party inventory and direct mouse-over comparisons between an item with your currently equipped item (by holding shift). The second big thing is the addition of the fifth major location in Arizona, the Prison, which was formerly the Ranger Center, now taken over by a rival militia. Ranger Team Echo heads into the Prison in search of ways into Damonta, a town seemingly unreachable beyond a radiation wall.
Wasteland 2 is build on the Unity3D engine.