Games like Defensurvivor
Games like Defensurvivor include Plants vs. Zombies GOTY Edition, Necrosmith, Vampire Survivors, Sir, We Have an Orc Problem, and Mindustry. We matched them by the tags players give Defensurvivor on Steam (Bullet Hell, Roguelite, Tower Defense, PvE, and Base Building): closest matches first, and among equally close ones the better-known games.

Plants vs. Zombies GOTY Edition
Shared: Tower Defense · Strategy · 2D

Necrosmith
Shared: Tower Defense · Roguelite · Bullet Hell

Vampire Survivors
Shared: Bullet Hell · Roguelite · 2D

Sir, We Have an Orc Problem
Shared: Tower Defense · Roguelite · PvE

Mindustry
Shared: Tower Defense · Base Building · RTS

Bloons TD 6
Shared: Tower Defense · Strategy · Casual

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

They Are Billions
Shared: Base Building · Tower Defense · Strategy

Tower Dominion
Shared: Tower Defense · Base Building · Roguelite

Age of Darkness: Final Stand
Shared: Tower Defense · RTS · Base Building

Cult of the Lamb
Shared: Base Building · Roguelite · Cute

The King is Watching
Shared: Tower Defense · Base Building · RTS

Emberward
Shared: Tower Defense · Roguelite · Strategy

Necrosmith 2
Shared: Tower Defense · Roguelite · Bullet Hell

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

Nordhold
Shared: Tower Defense · Roguelite · Strategy

ShapeHero Factory
Shared: Tower Defense · Roguelite · Base Building

Monsters are Coming!
Shared: Roguelite · Tower Defense · Bullet Hell

Age of Mythology: Retold
Shared: RTS · Base Building · Strategy

Rogue Tower
Shared: Tower Defense · Strategy · Roguelite

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

BALL x PIT
Shared: Roguelite · Bullet Hell · 2D

Grim Nights
Shared: Tower Defense · Base Building · Strategy

Deep Rock Galactic: Survivor
Shared: Roguelite · Bullet Hell · PvE