added Stargus
added Dune 2000

more impressive OpenRA screenshots
added UrbanTerror

inspired by Counter-Strike including game mods/maps
only the engine is Open Source and just because Q3 forces them
added Unvanquished and Tremulous

Quake 3 games that remind me a lot of the GoldSrc mod NS
added Half-Life 1 (GoldSrc)
Merge pull request #26 from Mailaender/master

Dune 2000/Starcraft/Half-Life/Counter-Strike/Natural-Selection