Games like G.O.D. Global Orbital Defense
Games like G.O.D. Global Orbital Defense include Defense Grid: The Awakening, X-Morph: Defense, Infested Planet, Sanctum 2, and Creeper World 3: Arc Eternal. We matched them by the tags players give G.O.D. Global Orbital Defense on Steam (Strategy, Action, Indie, Simulation, and Tower Defense): closest matches first, and among equally close ones the better-known games.

Defense Grid: The Awakening
Shared: Strategy · Tower Defense · Indie

X-Morph: Defense
Shared: Strategy · Action · Tower Defense

Infested Planet
Shared: Strategy · Action · Tower Defense

Sanctum 2
Shared: Strategy · Tower Defense · Action

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

Totally Accurate Battle Simulator
Shared: Simulation · Strategy · Indie

Plague Inc: Evolved
Shared: Strategy · Simulation · Indie

Deliver Us The Moon
Shared: Action · Indie · Sci-fi

Mount & Blade II: Bannerlord
Shared: Strategy · Action · Simulation

Total Tank Simulator
Shared: Strategy · Action · Simulation

Anomaly Warzone Earth
Shared: Strategy · Indie · Action

Half-Life 2
Shared: Action · Sci-fi · Story Rich

FTL: Faster Than Light
Shared: Strategy · Indie · Sci-fi

RimWorld
Shared: Strategy · Simulation · Singleplayer

Black Mesa
Shared: Action · Sci-fi · Singleplayer

Orcs Must Die!
Shared: Action · Strategy · Tower Defense

Orcs Must Die! 2
Shared: Action · Strategy · Tower Defense

Taur
Shared: Strategy · Action · Tower Defense

Papers, Please
Shared: Indie · Simulation · Singleplayer

The Escapists
Shared: Strategy · Simulation · Indie

Door Kickers
Shared: Strategy · Action · Simulation

Russian Life Simulator
Shared: Simulation · Indie · Action

Sultan's Game
Shared: Strategy · Story Rich · Simulation

GemCraft - Chasing Shadows
Shared: Strategy · Indie · Tower Defense