Games like Terminal Breach
Games like Terminal Breach include Vampire Survivors, Soulstone Survivors, Death Must Die, Halls of Torment, and Megabonk. We matched them by the tags players give Terminal Breach on Steam (Casual, Action Roguelike, Early Access, Bullet Hell, and Top-Down Shooter): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Death Must Die
Shared: Action Roguelike · Bullet Hell · Roguelite

Halls of Torment
Shared: Action Roguelike · Bullet Hell · Roguelite

Megabonk
Shared: Action Roguelike · Bullet Hell · Roguelite

Yet Another Zombie Survivors
Shared: Action Roguelike · Top-Down Shooter · Roguelite

Goobies
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter

BALL x PIT
Shared: Action · Bullet Hell · Action Roguelike

Deep Rock Galactic: Survivor
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter

Nordic Ashes: Survivors of Ragnarok
Shared: Action Roguelike · Bullet Hell · Roguelite

Arms of God
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter

Brotato
Shared: Action Roguelike · Bullet Hell · Roguelite

The Spell Brigade
Shared: Bullet Hell · Action Roguelike · Roguelite

Hades
Shared: Action Roguelike · Roguelite · Action

FatalZone
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter

Apocalypse Party
Shared: Casual · Action Roguelike · Top-Down Shooter

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Roguelite

Tiny Rogues
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter

Spellbook Demonslayers
Shared: Early Access · Action Roguelike · Bullet Hell

NIMRODS
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter

Magicraft
Shared: Action Roguelike · Bullet Hell · Roguelite

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Action

Crab Champions
Shared: Action Roguelike · Bullet Hell · Casual

