Games like Magic Caster
Games like Magic Caster include Vampire Survivors, BALL x PIT, Halls of Torment, Boneraiser Minions, and Megabonk. We matched them by the tags players give Magic Caster on Steam (Bullet Hell, Roguelite, PvE, Arcade, and 2D): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · Roguelite · 2D

BALL x PIT
Shared: Roguelite · Bullet Hell · Arcade

Halls of Torment
Shared: Roguelite · Bullet Hell · Pixel Graphics

Boneraiser Minions
Shared: Bullet Hell · Roguelite · 2D

Megabonk
Shared: Roguelite · Bullet Hell · Arcade

Deep Rock Galactic: Survivor
Shared: Roguelite · Bullet Hell · PvE

Death Must Die
Shared: Bullet Hell · Roguelite · Pixel Graphics

Rogue: Genesia
Shared: Bullet Hell · Roguelite · Arcade

Enter the Gungeon
Shared: Bullet Hell · Pixel Graphics · 2D

Necrosmith
Shared: Roguelite · Bullet Hell · Top-Down

Rocket Rats
Shared: Bullet Hell · Roguelite · 2D

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

Dead Cells
Shared: Roguelite · 2D · Pixel Graphics

Noobs Want to Live
Shared: Bullet Hell · Roguelite · Pixel Graphics

Yet Another Zombie Survivors
Shared: Roguelite · Arcade · Zombies

Skul: The Hero Slayer
Shared: Roguelite · 2D · Pixel Graphics

20 Minutes Till Dawn
Shared: Bullet Hell · Roguelite · Pixel Graphics

Planes, Bullets and Vodka
Shared: Bullet Hell · Casual · Arcade

Nova Drift
Shared: Bullet Hell · Roguelite · Arcade

Brotato
Shared: Bullet Hell · Roguelite · Singleplayer

Bit Blaster XL
Shared: Bullet Hell · Arcade · 2D

Exit the Gungeon
Shared: Arcade · Bullet Hell · 2D

Astro Prospector
Shared: Roguelite · Bullet Hell · Casual

Nuclear Throne
Shared: Bullet Hell · Roguelite · Pixel Graphics