Games like Doom Survivor: Horde Rush
Games like Doom Survivor: Horde Rush include Vampire Survivors, Plants vs. Zombies GOTY Edition, Balatro, Plague Inc: Evolved, and Stoneshard. We matched them by the tags players give Doom Survivor: Horde Rush on Steam (Casual, Singleplayer, 2D, Bullet Hell, and Strategy): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · 2D · Singleplayer

Plants vs. Zombies GOTY Edition
Shared: Singleplayer · Casual · Strategy

Balatro
Shared: Singleplayer · Roguelike · Strategy

Plague Inc: Evolved
Shared: Strategy · Singleplayer · Casual

Stoneshard
Shared: Roguelike · Strategy · 2D

Enter the Gungeon
Shared: Bullet Hell · Roguelike · Pixel Graphics

Brotato
Shared: Singleplayer · Bullet Hell · Roguelike

Organ Trail: Director's Cut
Shared: Strategy · Singleplayer · Zombies

DAVE THE DIVER
Shared: Casual · Singleplayer · Pixel Graphics

The Escapists
Shared: Singleplayer · Strategy · 2D

Rocket Rats
Shared: Casual · Bullet Hell · 2D

Slots & Daggers
Shared: Casual · Strategy · Roguelike

Ballionaire
Shared: Singleplayer · Casual · 2D

DELTARUNE
Shared: Singleplayer · Bullet Hell · 2D

Megabonk
Shared: Roguelike · Bullet Hell · Singleplayer

Planes, Bullets and Vodka
Shared: Casual · Bullet Hell · 2D

Boneraiser Minions
Shared: Bullet Hell · 2D · Singleplayer

Nuclear Throne
Shared: Roguelike · Bullet Hell · Pixel Graphics

Seraph's Last Stand
Shared: Casual · Bullet Hell · 2D

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

Game Dev Tycoon
Shared: Casual · Singleplayer · Strategy

Dead Cells
Shared: Roguelike · 2D · Pixel Graphics

Asgard's Fall — Viking Survivors
Shared: Casual · Bullet Hell · 2D

Death Must Die
Shared: Bullet Hell · 2D · Pixel Graphics