Games like Cosmic Tank
Games like Cosmic Tank include Halo: Spartan Assault, STAR WARS™ Battlefront™ II, Half-Life 2, STAR WARS™ Battlefront II (Classic, 2005), and Project Wingman. We matched them by the tags players give Cosmic Tank on Steam (Action, Arcade, Singleplayer, Sci-fi, and Space): closest matches first, and among equally close ones the better-known games.

Halo: Spartan Assault
Shared: Action · Singleplayer · Sci-fi

STAR WARS™ Battlefront™ II
Shared: Singleplayer · Shooter · Action

Half-Life 2
Shared: Action · Sci-fi · Singleplayer

STAR WARS™ Battlefront II (Classic, 2005)
Shared: Action · Shooter · Sci-fi

Project Wingman
Shared: Action · Singleplayer · Arcade

Black Mesa
Shared: Action · Sci-fi · Singleplayer

Halo Infinite
Shared: Singleplayer · Action · Shooter

Alien Breed: Impact
Shared: Action · Sci-fi · Shooter

Bit Blaster XL
Shared: Arcade · Action · Shooter

Sky Force Reloaded
Shared: Arcade · Action · Shoot 'Em Up

Dead Space (2008)
Shared: Action · Sci-fi · Space

Cyberhunt
Shared: Action · Arcade · Shoot 'Em Up

Titanfall® 2
Shared: Singleplayer · Action · Shooter

Snake Force
Shared: Action · Shooter · Singleplayer

Halo: Campaign Evolved
Shared: Action · Singleplayer · Sci-fi

Shadowgrounds
Shared: Action · Sci-fi · Singleplayer

Dead Space
Shared: Sci-fi · Space · Singleplayer

EVERSPACE™
Shared: Action · Space · Sci-fi

STAR WARS™: Squadrons
Shared: Space · Singleplayer · Action

BioShock Infinite
Shared: Action · Singleplayer · Shooter

Starship Troopers: Extermination
Shared: Action · Sci-fi · Arcade

R-Type Final 2
Shared: Action · Arcade · Shoot 'Em Up

BALL x PIT
Shared: Action · Arcade · Shoot 'Em Up

Half-Life: Opposing Force
Shared: Action · Sci-fi · Singleplayer