Games like Seraph's Last Stand
Games like Seraph's Last Stand include Vampire Survivors, Halls of Torment, Megabonk, Death Must Die, and Boneraiser Minions. We matched them by the tags players give Seraph's Last Stand on Steam (Action Roguelike, Bullet Hell, Casual, Roguelike Deckbuilder, and 2D): closest matches first, and among equally close ones the better-known games.

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

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

Megabonk
Shared: Action Roguelike · Bullet Hell · Roguelike

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

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Pixel Graphics

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

Dead Cells
Shared: Action Roguelike · Roguelike · 2D

Brotato
Shared: Bullet Hell · Action Roguelike · Roguelike

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

Rocket Rats
Shared: Action Roguelike · Bullet Hell · Casual

Balatro
Shared: Roguelike Deckbuilder · Roguelike · Pixel Graphics

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

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

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

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Pixel Graphics

Dungreed
Shared: Action Roguelike · Pixel Graphics · Roguelike

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

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelike

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

Wizard of Legend
Shared: Action Roguelike · Pixel Graphics · Roguelike

Asgard's Fall — Viking Survivors
Shared: Action Roguelike · Bullet Hell · Casual

Karate Survivor
Shared: Action Roguelike · Bullet Hell · Roguelike

Desktop Survivors 98
Shared: Action Roguelike · Bullet Hell · Casual

Renfield: Bring Your Own Blood
Shared: Action Roguelike · Bullet Hell · Pixel Graphics