Games like Toast Defense
Games like Toast Defense include Bloons TD 6, Plants vs. Zombies GOTY Edition, Terraria, RimWorld, and Bloons TD 5. We matched them by the tags players give Toast Defense on Steam (Strategy, Sandbox, Tower Defense, Survival, and Free to Play): 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: Strategy · Tower Defense · Singleplayer

Terraria
Shared: Sandbox · Survival · 2D

RimWorld
Shared: Strategy · Survival · Sandbox

Bloons TD 5
Shared: Strategy · Tower Defense · Action

Ultimate Custom Night
Shared: Free to Play · Strategy · Singleplayer

Dig or Die
Shared: Sandbox · Survival · Tower Defense

Once Human
Shared: Free to Play · Survival · Action

Oxygen Not Included
Shared: Survival · Sandbox · Strategy

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

The Escapists
Shared: Strategy · 2D · Singleplayer

Rise to Ruins
Shared: Tower Defense · Strategy · Survival

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

Castle Story
Shared: Strategy · Sandbox · Survival

Totally Accurate Battle Simulator
Shared: Sandbox · Strategy · Singleplayer

Cultivation Tales
Shared: Sandbox · Survival · Action

Mount & Blade II: Bannerlord
Shared: Strategy · Sandbox · Action

Banished
Shared: Strategy · Survival · Sandbox

Factorio
Shared: Sandbox · Strategy · Survival

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

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

Don't Starve Together
Shared: Survival · Sandbox · 2D

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

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