Spring - (Linux, Windows) If you’re looking forward to 2008 rather than backward to 2007, then look to Spring (also known as TA Spring or Total Annihilation: Spring) as the open source game of the year. TA Spring currently can execute most of Total Annihilation’s original gameplay flawlessly with its original units in their original format. Large battles are limited only by your computer’s power, with support for up to 5,000 units. You’ll wage those battles on large, highly detailed 3D maps with camera modes that allow you to view the battle scene from almost any angle. Games are played using one of a number of mods. Price: The core game is released under GPL License. Fortunately as of now, there are also two mods which have been released under the GNU/GPL, and several more which do not have clear licence terms (owned by their modder). However, there are also several mods for which some parts are still under copyright of Atari. For these you need to own the original TA game if you want to play.