Games like Prism Core
Games like Prism Core include Vampire Survivors, Megabonk, UBERMOSH, Planes, Bullets and Vodka, and Timberman. We matched them by the tags players give Prism Core on Steam (Casual, Arcade, Survival, Bullet Hell, and Cyberpunk): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · Pixel Graphics · Casual

Megabonk
Shared: Bullet Hell · Survival · Indie

UBERMOSH
Shared: Cyberpunk · Arcade · Pixel Graphics

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

Timberman
Shared: Casual · Pixel Graphics · Arcade

20 Minutes Till Dawn
Shared: Survival · Bullet Hell · Casual

A Dance of Fire and Ice
Shared: Arcade · Indie · Casual

Razortron 2000
Shared: Casual · Arcade · Indie

LUFTRAUSERS
Shared: Arcade · Bullet Hell · Indie

Bit Blaster XL
Shared: Bullet Hell · Arcade · Casual

Brotato
Shared: Bullet Hell · Survival · Singleplayer

Boneraiser Minions
Shared: Bullet Hell · Pixel Graphics · Casual

AudioSurf
Shared: Casual · Arcade · Indie

Exit the Gungeon
Shared: Arcade · Bullet Hell · Indie

Retrowave
Shared: Casual · Indie · Cyberpunk

To The Core
Shared: Casual · Arcade · Indie

Akane
Shared: Cyberpunk · Indie · Pixel Graphics

UBERMOSH Vol.3
Shared: Arcade · Indie · Cyberpunk

UFO 50
Shared: Arcade · Pixel Graphics · Indie

pureya
Shared: Arcade · Casual · Colorful

SANABI
Shared: Pixel Graphics · Cyberpunk · Indie

UBERMOSH Vol.5
Shared: Arcade · Indie · Bullet Hell

SUPER CHICKEN JUMPER
Shared: Arcade · Pixel Graphics · Casual

Enter the Gungeon
Shared: Bullet Hell · Pixel Graphics · Indie