Games like Dream Savior
Games like Dream Savior include Vampire Survivors, Megabonk, Death Must Die, Enter the Gungeon, and Halls of Torment. We matched them by the tags players give Dream Savior on Steam (Action Roguelike, Bullet Hell, Action, Collectathon, and PvE): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · 2D

Megabonk
Shared: Action Roguelike · Bullet Hell · Roguelike

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

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

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

Rabbit and Steel
Shared: Bullet Hell · Action Roguelike · Roguelike

Skul: The Hero Slayer
Shared: Action Roguelike · Action · Roguelike

Brotato
Shared: Bullet Hell · Action Roguelike · Roguelike

Hero Siege
Shared: Action Roguelike · RPG · Roguelike

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Roguelike

Dungreed
Shared: Action Roguelike · Action · Roguelike

Dead Cells
Shared: Action Roguelike · Roguelike · 2D

Sephiria
Shared: Action Roguelike · Roguelike · Action

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

Tower of Babel: Survivors of Chaos
Shared: Action Roguelike · Bullet Hell · Action

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · 2D

Noobs Want to Live
Shared: Bullet Hell · Action · Action Roguelike

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Action

Rogue Legacy
Shared: Action Roguelike · Action · Roguelike

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Roguelike · Indie

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelike

Atomicrops
Shared: Action · Bullet Hell · Action Roguelike

Rocket Rats
Shared: Action Roguelike · Bullet Hell · Action

Hades
Shared: Action Roguelike · Action · Roguelike