Silhouettes of game characters

1920 × 1080

Halo and Gears of War characters

1024 × 768

Portal turrets and robots

2560 × 1600

Covenant Vampire concept art

1024 × 615

Defy the Covenant poster

1920 × 1200

Halo 3 promotional art

1600 × 1200

Halo Reach helmet lineup

1964 × 939

Halo Reach mining facility

1920 × 1200

Halo: Reach concept art

1600 × 633

Mass Effect alien species

1280 × 905

Alien Landscape with Ringed Planet — Gray, Dramatic, Night

1920 × 1080

Alien character in Mass Effect 2

1280 × 720