Games like Cosmic Robots
Games like Cosmic Robots include DG2: Defense Grid 2, Taur, Age of Darkness: Final Stand, STAR WARS™ Empire at War - Gold Pack, and Planetary Annihilation: TITANS. We matched them by the tags players give Cosmic Robots on Steam (Strategy, Tower Defense, RTS, Robots, and Sci-fi): closest matches first, and among equally close ones the better-known games.

DG2: Defense Grid 2
Shared: Strategy · Tower Defense · Sci-fi

Taur
Shared: Strategy · Tower Defense · Sci-fi

Age of Darkness: Final Stand
Shared: Tower Defense · Strategy · RTS

STAR WARS™ Empire at War - Gold Pack
Shared: Strategy · RTS · Sci-fi

Planetary Annihilation: TITANS
Shared: Strategy · RTS · Sci-fi

Aliens: Dark Descent
Shared: Strategy · RTS · Sci-fi

Grey Goo
Shared: Strategy · RTS · Sci-fi

Mindustry
Shared: Tower Defense · Strategy · RTS

Defense Grid: The Awakening
Shared: Strategy · Tower Defense · Sci-fi

Supreme Commander 2
Shared: Strategy · RTS · Sci-fi

Warhammer 40,000: Dawn of War III
Shared: Strategy · RTS · Sci-fi

Halo Wars: Definitive Edition
Shared: Strategy · RTS · Sci-fi

Supreme Commander: Forged Alliance
Shared: Strategy · RTS · Sci-fi

Bloons TD 6
Shared: Strategy · Tower Defense · Casual

Infested Planet
Shared: Strategy · Tower Defense · RTS

Iron Marines
Shared: Strategy · RTS · Sci-fi

Creeper World 4
Shared: Tower Defense · RTS · Strategy

Sins of a Solar Empire II
Shared: Strategy · RTS · Sci-fi

Warhammer 40,000: Dawn of War - Definitive Edition
Shared: Strategy · RTS · Sci-fi

Creeper World 3: Arc Eternal
Shared: Strategy · Tower Defense · RTS

Thronefall
Shared: Strategy · Tower Defense · Action

Command & Conquer 3 Tiberium Wars™
Shared: Strategy · RTS · Action

Homeworld Remastered Collection
Shared: Strategy · RTS · Sci-fi

Natural Selection 2
Shared: Strategy · RTS · Sci-fi