Games like Tower One
Games like Tower One include Kingdom Rush - Tower Defense, Kingdom Rush Frontiers - Tower Defense, Bloons TD 6, Plants vs. Zombies GOTY Edition, and Kingdom Rush 5: Alliance TD. We matched them by the tags players give Tower One on Steam (Strategy, Tower Defense, 2D, Pixel Graphics, and Top-Down): closest matches first, and among equally close ones the better-known games.

Kingdom Rush - Tower Defense
Shared: Strategy · Tower Defense · 2D

Kingdom Rush Frontiers - Tower Defense
Shared: Strategy · Tower Defense · 2D

Bloons TD 6
Shared: Strategy · Tower Defense · Singleplayer

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

Kingdom Rush 5: Alliance TD
Shared: Strategy · Tower Defense · 2D

Dungeon Warfare
Shared: Strategy · Tower Defense · Pixel Graphics

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

Kingdom Rush Origins - Tower Defense
Shared: Strategy · Tower Defense · 2D

Kingdom Rush Vengeance - Tower Defense
Shared: Strategy · Tower Defense · 2D

The Escapists
Shared: Strategy · Pixel Graphics · 2D

Relic Guardian - Tower Defense
Shared: Strategy · Tower Defense · 2D

Rise to Ruins
Shared: Tower Defense · Strategy · Pixel Graphics

Kingdom Rush 6: Genesis TD
Shared: Strategy · Tower Defense · 2D

GemCraft - Frostborn Wrath
Shared: Tower Defense · Strategy · 2D

The Escapists 2
Shared: Strategy · Pixel Graphics · 2D

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

Kingdom Two Crowns
Shared: Tower Defense · Strategy · Singleplayer

METAL SLUG ATTACK RELOADED
Shared: Strategy · Tower Defense · Pixel Graphics

Necrosmith
Shared: Tower Defense · Strategy · Top-Down

Border Pioneer
Shared: Strategy · Tower Defense · Pixel Graphics

Minimalist Tower Defense
Shared: Strategy · Tower Defense · 2D

Super Sanctum TD
Shared: Strategy · Tower Defense · 2D

Stoneshard
Shared: Strategy · Pixel Graphics · 2D

Infested Planet
Shared: Strategy · Tower Defense · Top-Down