Best Sci-Fi Games of the 21st Century

1 Halo Combat Evolved

2 Mass Effect 2

3 Halo 3

4 Overwatch

5 Starcraft II

6 XCOM: Enemy Unknown

7 Mass Effect

8 Halo Reach

9 Destiny

10 Metroid Prime

The Contenders

11 Gears of War

12 Super Mario Galaxy

13 Deus Ex: Human Revolution

14 Star Wars: Knights of the Old Republic

15 Unreal Tournament 2004

16 Half Life 2