Games like Merge Towers
Games like Merge Towers include Plants vs. Zombies GOTY Edition, Bloons TD 6, Kingdom Rush - Tower Defense, Plague Inc: Evolved, and Kingdom Rush Frontiers - Tower Defense. We matched them by the tags players give Merge Towers on Steam (Strategy, Casual, Tower Defense, Singleplayer, and Indie): closest matches first, and among equally close ones the better-known games.

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

Bloons TD 6
Shared: Strategy · Tower Defense · Singleplayer

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

Plague Inc: Evolved
Shared: Strategy · Singleplayer · Indie

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

Game Dev Tycoon
Shared: Strategy · Casual · Indie

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

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

Bloons TD 5
Shared: Strategy · Tower Defense · Casual

Mini Motorways
Shared: Strategy · Casual · Indie

911 Operator
Shared: Strategy · Singleplayer · Casual

Rogue Tower
Shared: Strategy · Tower Defense · Casual

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

Balatro
Shared: Strategy · Singleplayer · Indie

Battle Ranch: Pigs vs Plants
Shared: Strategy · Casual · Tower Defense

Warstone TD
Shared: Strategy · Tower Defense · Indie

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

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

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

Mini Metro
Shared: Strategy · Casual · Indie

Ancient Planet Tower Defense
Shared: Strategy · Tower Defense · Casual

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

Prime World: Defenders
Shared: Strategy · Tower Defense · Indie

Kingdom Two Crowns
Shared: Tower Defense · Strategy · Singleplayer