Games like PuPaiPo Space Deluxe
Games like PuPaiPo Space Deluxe include Vampire Survivors, Nova Drift, BALL x PIT, Bit Blaster XL, and Planes, Bullets and Vodka. We matched them by the tags players give PuPaiPo Space Deluxe on Steam (Arena Shooter, Shoot 'Em Up, Top-Down Shooter, Bullet Hell, and Casual): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · 2D · Casual

Nova Drift
Shared: Shoot 'Em Up · Bullet Hell · Arena Shooter

BALL x PIT
Shared: Bullet Hell · Arcade · Shoot 'Em Up

Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Casual · Bullet Hell

Cyberhunt
Shared: Shoot 'Em Up · Casual · Action

Chippy
Shared: Arena Shooter · Bullet Hell · Shoot 'Em Up

Sky Force Reloaded
Shared: Shoot 'Em Up · Top-Down Shooter · Bullet Hell

Super Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Arcade

LUFTRAUSERS
Shared: Bullet Hell · Arcade · Shoot 'Em Up

20 Minutes Till Dawn
Shared: Bullet Hell · Shoot 'Em Up · Top-Down Shooter

DoDonPachi Resurrection
Shared: Shoot 'Em Up · Top-Down Shooter · Bullet Hell

Brotato
Shared: Bullet Hell · Arena Shooter · Top-Down Shooter

SNKRX
Shared: Arena Shooter · Top-Down Shooter · Shoot 'Em Up

Beat Hazard
Shared: Shoot 'Em Up · Bullet Hell · 2D

State of Anarchy: Master of Mayhem
Shared: Top-Down Shooter · Bullet Hell · Shoot 'Em Up

ZeroRanger
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Timberman
Shared: Casual · 2D · Arcade

Time Wasters
Shared: Bullet Hell · Arena Shooter · Shoot 'Em Up

Rocket Rats
Shared: Bullet Hell · Casual · 2D

Twin Shot Deluxe
Shared: Casual · Arcade · Action

Broforce
Shared: Action · 2D · Pixel Graphics

Bot Vice
Shared: Top-Down Shooter · Shoot 'Em Up · Bullet Hell

Titan Attacks!
Shared: Arena Shooter · Shoot 'Em Up · Bullet Hell