Games like Forbidden Planet
Games like Forbidden Planet include FTL: Faster Than Light, Space Run, Plants vs. Zombies GOTY Edition, Orcs Must Die! 2, and Dungeon of the ENDLESS™. We matched them by the tags players give Forbidden Planet on Steam (Indie, Strategy, Space, and Tower Defense): closest matches first, and among equally close ones the better-known games.

FTL: Faster Than Light
Shared: Strategy · Space · Indie

Space Run
Shared: Strategy · Indie · Tower Defense

Plants vs. Zombies GOTY Edition
Shared: Strategy · Tower Defense · Indie

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

Dungeon of the ENDLESS™
Shared: Strategy · Indie · Tower Defense

Bloons TD 6
Shared: Strategy · Tower Defense

Space Run Galaxy
Shared: Indie · Strategy · Space

Particle Fleet: Emergence
Shared: Indie · Strategy · Space

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

Creeper World 4
Shared: Tower Defense · Space · Strategy

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

Heat Signature
Shared: Indie · Space · Strategy

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

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

Crying Suns
Shared: Strategy · Space · Indie

Kingdom Rush 5: Alliance TD
Shared: Strategy · Tower Defense · Indie

Stellaris
Shared: Strategy · Space

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

Space Pirates And Zombies 2
Shared: Strategy · Space · Indie

Warstone TD
Shared: Strategy · Indie · Tower Defense

Sanctum 2
Shared: Tower Defense · Strategy · Indie

Rock of Ages
Shared: Strategy · Indie · Tower Defense

StarDrive 2
Shared: Indie · Strategy · Space

Cosmoteer: Starship Architect & Commander
Shared: Space · Indie · Strategy

