Games like Chaos Party
Games like Chaos Party include BALL x PIT, Stick Fight: The Game, Sky Force Reloaded, DoDonPachi Resurrection, and Bit Blaster XL. We matched them by the tags players give Chaos Party on Steam (Party, 4 Player Local, Split Screen, Arcade, and Physics): closest matches first, and among equally close ones the better-known games.

BALL x PIT
Shared: Arcade · Action · Top-Down Shooter

Stick Fight: The Game
Shared: 4 Player Local · Action · 2D

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

DoDonPachi Resurrection
Shared: Arcade · Top-Down Shooter · 2D

Bit Blaster XL
Shared: Arcade · 2D · Shoot 'Em Up

Amazing Frog?
Shared: Split Screen · Physics · 4 Player Local

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

Cyberhunt
Shared: Arcade · Action · 2D

Nova Drift
Shared: Arcade · Shoot 'Em Up · 2D

ESCHATOS
Shared: Arcade · Top-Down Shooter · 2D

Planes, Bullets and Vodka
Shared: Arcade · Action · Shoot 'Em Up

HELLDIVERS™ Dive Harder Edition
Shared: Top-Down Shooter · 4 Player Local · Action

Revolution Ace
Shared: Arcade · Action · Shoot 'Em Up

Halo: Spartan Assault
Shared: Top-Down Shooter · Action · Top-Down

Starblast
Shared: Arcade · Action · 2D

DARIUSBURST Chronicle Saviours
Shared: Arcade · 4 Player Local · Shoot 'Em Up

BLUE REVOLVER
Shared: Arcade · Shoot 'Em Up · Action

Guns, Gore & Cannoli
Shared: 2D · Action · Shoot 'Em Up

Move or Die
Shared: 4 Player Local · 2D · Action

Crimzon Clover World EXplosion
Shared: Arcade · Action · Shoot 'Em Up

Chippy
Shared: Arcade · Top-Down Shooter · Shoot 'Em Up

LUFTRAUSERS
Shared: Arcade · 2D · Action

Renegade Ops
Shared: Arcade · Action · Top-Down

METAL SLUG
Shared: Arcade · 2D · Action