Games like momatron
Games like momatron include Bloons TD 6, Plants vs. Zombies GOTY Edition, Defense Grid: The Awakening, Dome Keeper, and DG2: Defense Grid 2. We matched them by the tags players give momatron on Steam (Strategy, Tower Defense, Singleplayer, 3D Platformer, and Sci-fi): closest matches first, and among equally close ones the better-known games.

Bloons TD 6
Shared: Strategy · Tower Defense · Singleplayer

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

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

Dome Keeper
Shared: Singleplayer · Sci-fi · Tower Defense

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

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

Kingdom Rush - Tower Defense
Shared: Strategy · Tower Defense · Singleplayer

Sanctum 2
Shared: Tower Defense · Strategy · Sci-fi

Starship Troopers: Terran Command
Shared: Strategy · Singleplayer · Sci-fi

Kingdom Rush Vengeance - Tower Defense
Shared: Strategy · Tower Defense · Singleplayer

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

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

Portal
Shared: 3D Platformer · Singleplayer · Sci-fi

Kingdom Rush Frontiers - Tower Defense
Shared: Strategy · Tower Defense · Singleplayer

Stellaris
Shared: Strategy · Sci-fi · Singleplayer

XCOM 2
Shared: Strategy · Singleplayer · Sci-fi

Infested Planet
Shared: Strategy · Tower Defense · Singleplayer

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

Kingdom Rush Origins - Tower Defense
Shared: Strategy · Tower Defense · Singleplayer

Taur
Shared: Strategy · Tower Defense · Singleplayer

Space Run
Shared: Strategy · Tower Defense · Sci-fi

Kingdom Two Crowns
Shared: Tower Defense · Singleplayer · Strategy

RimWorld
Shared: Strategy · Singleplayer · Sci-fi

X-Morph: Defense
Shared: Strategy · Tower Defense · Sci-fi