Games like DEFENDit
Games like DEFENDit include Bloons TD 6, Plants vs. Zombies GOTY Edition, Get Off My Lawn!, MUSYNX, and The WereCleaner. We matched them by the tags players give DEFENDit on Steam (Casual, Arcade, Tower Defense, Arena Shooter, and 3D): closest matches first, and among equally close ones the better-known games.

Bloons TD 6
Shared: Tower Defense · Casual · Family Friendly

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

Get Off My Lawn!
Shared: Casual · Tower Defense · Free to Play

MUSYNX
Shared: Casual · Arcade · Indie

The WereCleaner
Shared: Casual · Arcade · Free to Play

Peggle Deluxe
Shared: Casual · Arcade · Family Friendly

Bloons TD 5
Shared: Tower Defense · Casual · Family Friendly

A Dance of Fire and Ice
Shared: Arcade · Casual · Indie

Donut County
Shared: Casual · Indie · Family Friendly

Zuma's Revenge!
Shared: Casual · Arcade · Singleplayer

Rogue Tower
Shared: Tower Defense · Casual · 3D

Golf With Your Friends
Shared: Casual · Family Friendly · Indie

The Sims™ 4
Shared: Free to Play · Casual · Singleplayer

Asphalt Legends
Shared: Arcade · Free to Play · 3D

Brawlhalla
Shared: Casual · Free to Play · Free To Play

Intergalactic Bubbles
Shared: Casual · Arcade · Indie

Feeding Frenzy 2 Deluxe
Shared: Casual · Arcade · Family Friendly

Progressbar95
Shared: Casual · Arcade · Tower Defense

Timberman
Shared: Casual · Arcade · Indie

Tetris® Effect: Connected
Shared: Family Friendly · Arcade · Casual

Razortron 2000
Shared: Casual · Arcade · Indie

Anarchy Arcade
Shared: Casual · Free to Play · Arcade

UpGun
Shared: Casual · Arcade · Arena Shooter

