Related to Master Chief and Cortana interaction

Aperture Science Innovators logo

2560 × 1600

Aperture Science logo on red background

1920 × 1080

Portal game logo with icons

1440 × 900

Dark Star One game scene

1600 × 1200

Aperture Science logo

1280 × 1024

Portal game logo and icons

1920 × 1200

Portal game icons and logo

6000 × 4067

Aperture Science Handheld Portal Device

1200 × 670

Aperture Science logo

1280 × 1024

Weighted Companion Cube

1680 × 1050

Weighted Companion Cube

1680 × 1050

Rocket: Deadlocked game art

800 × 600

Too Human game artwork

1920 × 1200

X Rebirth Ore Refining Module

1920 × 1400

Unmechanical game scene

1600 × 1200

Wolf Team game artwork

1024 × 768

Descent 3 game artwork

1920 × 1080

Aperture Laboratories logo with graffiti

1920 × 1080

Er'eauna game environment

1920 × 1200

Portal game art with Companion Cube

1600 × 900

Star Ocean 3 game scene

1280 × 960

Hydrophobia: Prophecy game art

2560 × 1600

Portal game art with Companion Cube

1920 × 1080

StarCraft II game artwork

1680 × 1050