Zombie and Person Running

1280 × 960

Zombie Caution Sign — Brown

1280 × 1024

Zombie Chasing Person

1440 × 900

Zombie and Person Running — Black

1024 × 640

Biohazard Symbol — Yellow, Warning, Vector Art

1600 × 1200

Biohazard Symbol — Black, Ominous, Vector Art, White

1280 × 1024

Biohazard Symbol — Gray

1440 × 900

Erwin Schrödinger Portrait — Red, Warning, Vector Art

1440 × 900

Radioactive Symbol — Gray, Neutral

1600 × 1200

Zombie Warning Sign — Black, Vector Art, Caution

1680 × 1050

Caution Sign on Fence — Yellow

1600 × 900

Silhouette of Character — Yellow

1920 × 1080