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

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

Bloons TD 6
Shared: Strategy · Tower Defense · Singleplayer

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

Plague Inc: Evolved
Shared: Strategy · Singleplayer · Casual

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

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

Dungeon Defenders
Shared: Strategy · Singleplayer · Tower Defense

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

Mini Motorways
Shared: Strategy · Casual · Singleplayer

911 Operator
Shared: Strategy · Singleplayer · Casual

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

Orcs Must Die!
Shared: Strategy · Tower Defense · Third Person

The WereCleaner
Shared: Casual · Strategy · Singleplayer

Bloons TD 5
Shared: Strategy · Tower Defense · Casual

Shadow Tactics: Blades of the Shogun
Shared: Strategy · Singleplayer · Tactical

Zup! S
Shared: Casual · Singleplayer · Indie

XCOM 2
Shared: Strategy · Tactical · Singleplayer

Game Dev Tycoon
Shared: Strategy · Casual · Singleplayer

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

Unpacking
Shared: Casual · Singleplayer · Cute

Orcs Must Die! 2
Shared: Strategy · Tower Defense · Third Person

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

Balatro
Shared: Strategy · Singleplayer · Casual

Mini Metro
Shared: Strategy · Singleplayer · Casual