Games like Invasion
Games like Invasion include LUFTRAUSERS, Vampire Survivors, Super Hexagon, The Binding of Isaac: Rebirth, and Cuphead. We matched them by the tags players give Invasion on Steam (Action, Indie, Arcade, Bullet Hell, and 2D): closest matches first, and among equally close ones the better-known games.
LUFTRAUSERS
Shared: Indie · Action · Arcade
Vampire Survivors
Shared: Bullet Hell · Indie · 2D
Super Hexagon
Shared: Indie · Arcade · Difficult
The Binding of Isaac: Rebirth
Shared: Indie · Difficult · Replay Value
Cuphead
Shared: Difficult · Indie · 2D
ZeroRanger
Shared: Indie · Action · Bullet Hell
Exit the Gungeon
Shared: Indie · Action · Arcade
Savant - Ascent
Shared: Action · Indie · Shoot 'Em Up
Hollow Knight: Silksong
Shared: Indie · Difficult · 2D
Star Saviors
Shared: Action · Indie · Bullet Hell
Hotline Miami 2: Wrong Number
Shared: Action · Indie · Difficult
A Dance of Fire and Ice
Shared: Indie · Arcade · Difficult
Hotline Miami
Shared: Action · Indie · Great Soundtrack
Planes, Bullets and Vodka
Shared: Action · Bullet Hell · Arcade
Hollow Knight
Shared: Indie · 2D · Difficult
Touhou Tenkuushou ~ Hidden Star in Four Seasons.
Shared: Bullet Hell · Indie · Shoot 'Em Up
The Binding of Isaac
Shared: Indie · Action · Difficult
Ikaruga
Shared: Arcade · Bullet Hell · Action
Geometry Dash
Shared: Difficult · 2D · Singleplayer
Jet Lancer
Shared: Action · Indie · 2D
Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Bullet Hell · Action · Shoot 'Em Up
Bit Blaster XL
Shared: Bullet Hell · Arcade · Shoot 'Em Up
Just Shapes & Beats
Shared: Bullet Hell · Indie · Action
Touhou Fuujinroku ~ Mountain of Faith.
Shared: Action · Indie · Bullet Hell