Games like Collapsion
Games like Collapsion include Bit Blaster XL, Planes, Bullets and Vodka, Broforce, Timberman, and Vampire Survivors. We matched them by the tags players give Collapsion on Steam (Action, Casual, Arcade, Shooter, and Shoot 'Em Up): closest matches first, and among equally close ones the better-known games.
Bit Blaster XL
Shared: Shoot 'Em Up · Shooter · Arcade
Planes, Bullets and Vodka
Shared: Action · Casual · Shoot 'Em Up
Broforce
Shared: Action · Pixel Graphics · 2D
Timberman
Shared: Casual · Action · Pixel Graphics
Vampire Survivors
Shared: Pixel Graphics · 2D · Casual
Cyberhunt
Shared: Action · Casual · Shoot 'Em Up
Chicken Invaders Universe
Shared: Action · Shooter · Shoot 'Em Up
STAR WARS™ Battlefront™ II
Shared: Shooter · Action · Space
LUFTRAUSERS
Shared: Action · Arcade · 2D
Huntdown
Shared: Action · Shooter · Pixel Graphics
METAL SLUG
Shared: Action · Arcade · 2D
Starship Troopers: Extermination
Shared: Action · Sci-fi · Arcade
CS2D
Shared: Action · Shooter · 2D
ZeroRanger
Shared: Action · Shoot 'Em Up · Arcade
METAL SLUG X
Shared: Action · Arcade · Shoot 'Em Up
BALL x PIT
Shared: Action · Arcade · Shoot 'Em Up
Super Crate Box
Shared: Action · Shooter · Pixel Graphics
Shower With Your Dad Simulator 2015: Do You Still Shower With Your Dad
Shared: Arcade · Casual · 2D
Distant Space
Shared: Arcade · Shoot 'Em Up · Casual
Nova Drift
Shared: Shoot 'Em Up · Arcade · Shooter
DRAINUS
Shared: Action · Shoot 'Em Up · Shooter
ShellShock Live
Shared: Action · 2D · Casual
Starblast
Shared: Action · Casual · Arcade
Chicken Invaders 5
Shared: Action · Casual · Shoot 'Em Up