Games like Swarming Planet
Games like Swarming Planet include DG2: Defense Grid 2, Aliens: Dark Descent, Taur, XCOM: Enemy Unknown, and Thronefall. We matched them by the tags players give Swarming Planet on Steam (Strategy, Tower Defense, Arcade, Aliens, and Action): closest matches first, and among equally close ones the better-known games.
DG2: Defense Grid 2
Shared: Strategy · Tower Defense · Action
Aliens: Dark Descent
Shared: Strategy · Action · Sci-fi
Taur
Shared: Strategy · Tower Defense · Action
XCOM: Enemy Unknown
Shared: Strategy · Aliens · Sci-fi
Thronefall
Shared: Strategy · Tower Defense · Action
Infested Planet
Shared: Strategy · Tower Defense · Action
Defense Grid: The Awakening
Shared: Strategy · Tower Defense · Sci-fi
X-Morph: Defense
Shared: Strategy · Tower Defense · Action
Planetary Annihilation: TITANS
Shared: Strategy · Base Building · Real Time Tactics
Creeper World 4
Shared: Tower Defense · Strategy · Real Time Tactics
Mindustry
Shared: Tower Defense · Strategy · Base Building
Kingdom Rush - Tower Defense
Shared: Strategy · Tower Defense · Action
Sanctum 2
Shared: Tower Defense · Strategy · Action
XCOM®: Chimera Squad
Shared: Strategy · Aliens · Sci-fi
Halo: Spartan Assault
Shared: Action · Sci-fi · Strategy
Kingdom Rush 6: Genesis TD
Shared: Strategy · Tower Defense · Action
Sid Meier's Civilization®: Beyond Earth™
Shared: Strategy · Sci-fi · Aliens
Anomaly Warzone Earth
Shared: Strategy · Tower Defense · Action
Kingdom Rush Origins - Tower Defense
Shared: Strategy · Tower Defense · Building
Warhammer 40,000: Dawn of War III
Shared: Strategy · Sci-fi · Action
Revenge of the Titans
Shared: Strategy · Tower Defense · Action
Halo Wars: Definitive Edition
Shared: Strategy · Base Building · Sci-fi
They Are Billions
Shared: Strategy · Base Building · Tower Defense
GemCraft - Chasing Shadows
Shared: Strategy · Tower Defense · Action