Games like Reef Defense
Games like Reef Defense include Totally Accurate Battle Simulator, Bloons TD 6, Plants vs. Zombies GOTY Edition, Slime Rancher 2, and Planet Coaster. We matched them by the tags players give Reef Defense on Steam (Strategy, Tower Defense, Adventure, Creature Collector, and Hidden Object): closest matches first, and among equally close ones the better-known games.

Totally Accurate Battle Simulator
Shared: Strategy · Adventure · Realistic

Bloons TD 6
Shared: Strategy · Tower Defense · 3D

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

Slime Rancher 2
Shared: Creature Collector · Adventure · Colorful

Planet Coaster
Shared: Strategy · Family Friendly · Simulation

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

Emberward
Shared: Tower Defense · Strategy · 3D

Pizza Possum
Shared: Strategy · Adventure · 3D

Thronefall
Shared: Strategy · Tower Defense · 3D

Tiny Tactics
Shared: Strategy · Tower Defense · 3D

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

Plague Inc: Evolved
Shared: Strategy · Indie · Simulation

Bloons TD 5
Shared: Strategy · Tower Defense · Family Friendly

Orcs Must Die! 3
Shared: Tower Defense · Strategy · 3D

Planet Coaster 2
Shared: Strategy · 3D · Simulation

Rock 'N' Roll Defense
Shared: Strategy · Tower Defense · Adventure

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

GemCraft - Chasing Shadows
Shared: Strategy · Tower Defense · Top-Down

Nexomon: Extinction
Shared: Creature Collector · Adventure · Top-Down

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

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

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

Rogue Tower
Shared: Strategy · Tower Defense · 3D

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

