Games like Vault Survivors
Games like Vault Survivors include Vampire Survivors, Halls of Torment, Dead Cells, Nuclear Throne, and Death Must Die. We matched them by the tags players give Vault Survivors on Steam (Post-apocalyptic, Action Roguelike, 2D, Pixel Graphics, and Roguelike): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Pixel Graphics · Bullet Hell

Halls of Torment
Shared: Action Roguelike · Pixel Graphics · Bullet Hell

Dead Cells
Shared: Action Roguelike · Roguelike · Pixel Graphics

Nuclear Throne
Shared: Action Roguelike · Pixel Graphics · Roguelike

Death Must Die
Shared: Action Roguelike · Pixel Graphics · Bullet Hell

暖雪 Warm Snow
Shared: Action Roguelike · 2D · Roguelite

Skul: The Hero Slayer
Shared: Action Roguelike · Pixel Graphics · 2D

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

BALL x PIT
Shared: Action Roguelike · Roguelite · Roguelike

Megabonk
Shared: Action Roguelike · Roguelike · Roguelite

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Roguelike · Pixel Graphics

Dungreed
Shared: Action Roguelike · Pixel Graphics · Roguelike

Hades
Shared: Action Roguelike · Roguelite · Roguelike

Brotato
Shared: Action Roguelike · Roguelike · Bullet Hell

Sephiria
Shared: Action Roguelike · Roguelike · Roguelite

Hades II
Shared: Roguelike · Action Roguelike · Roguelite

Undertale
Shared: Pixel Graphics · Story Rich · Multiple Endings

Boneraiser Minions
Shared: Action Roguelike · Pixel Graphics · 2D

BlazBlue Entropy Effect
Shared: Action Roguelike · 2D · Pixel Graphics

Hero Siege
Shared: Action Roguelike · Pixel Graphics · Roguelike

Rogue Legacy
Shared: Action Roguelike · Roguelike · 2D

Cultivation Story: Reincarnation
Shared: Action Roguelike · Bullet Hell · 2D

UnderMine
Shared: Action Roguelike · Pixel Graphics · Roguelite

Rocket Rats
Shared: Action Roguelike · Pixel Graphics · 2D