Games like Monster United
Games like Monster United include Plants vs. Zombies GOTY Edition, Bloons TD 6, Zero Stress King: Idle Defense, Kingdom Rush - Tower Defense, and Dorfromantik. We matched them by the tags players give Monster United on Steam (Casual, Strategy, Auto Battler, Tower Defense, and Cute): 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 · Casual

Zero Stress King: Idle Defense
Shared: Tower Defense · Auto Battler · Strategy

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

Dorfromantik
Shared: Casual · Relaxing · Strategy

RACCOIN: Coin Pusher Roguelike
Shared: Strategy · Casual · Turn-Based Strategy

Mini Motorways
Shared: Strategy · Casual · Relaxing

Unpacking
Shared: Casual · Cute · Relaxing

DAVE THE DIVER
Shared: Casual · Relaxing · Exploration

Book of Yog Idle RPG
Shared: Auto Battler · Casual · Strategy

Cluckmech Oasis
Shared: Strategy · Tower Defense · Cute

My Suika – Kyo’s Fruit Merge
Shared: Casual · Strategy · Cute

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

Infinity Nikki
Shared: Casual · Cute · Relaxing

Minami Lane
Shared: Casual · Cute · Relaxing

Shelldiver
Shared: Casual · Relaxing · Strategy

Terra Nil
Shared: Strategy · Relaxing · Casual

Legion TD 2 - Multiplayer Tower Defense
Shared: Tower Defense · Auto Battler · Strategy

Ballionaire
Shared: Casual · Strategy · Cute

Nodebuster
Shared: Casual · Strategy · Relaxing

Legend Creatures(传奇生物)
Shared: Auto Battler · Strategy · Casual

9 Kings
Shared: Strategy · Auto Battler · Roguelike

Rogue Tower
Shared: Strategy · Casual · Tower Defense

Loot Loop
Shared: Casual · Auto Battler · Strategy