Games like AstroGenesis
Games like AstroGenesis include LUFTRAUSERS, ZeroRanger, BALL x PIT, Touhou Fuujinroku ~ Mountain of Faith., and Star Saviors. We matched them by the tags players give AstroGenesis on Steam (Action, Indie, Shoot 'Em Up, and Bullet Hell): closest matches first, and among equally close ones the better-known games.
LUFTRAUSERS
Shared: Indie · Action · Bullet Hell
ZeroRanger
Shared: Indie · Shoot 'Em Up · Action
BALL x PIT
Shared: Action · Bullet Hell · Shoot 'Em Up
Touhou Fuujinroku ~ Mountain of Faith.
Shared: Action · Indie · Bullet Hell
Star Saviors
Shared: Action · Shoot 'Em Up · Indie
Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Shoot 'Em Up · Bullet Hell · Action
Revolution Ace
Shared: Action · Shoot 'Em Up · Indie
TouHou Makuka Sai ~ Fantastic Danmaku Festival Part II
Shared: Indie · Bullet Hell · Shoot 'Em Up
Star of Providence
Shared: Bullet Hell · Shoot 'Em Up · Indie
Savant - Ascent
Shared: Action · Indie · Shoot 'Em Up
The Void Rains Upon Her Heart
Shared: Indie · Bullet Hell · Action
Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Action · Shoot 'Em Up · Bullet Hell
TouHou Makuka Sai ~ Fantastic Danmaku Festival
Shared: Indie · Action · Bullet Hell
Nova Drift
Shared: Shoot 'Em Up · Bullet Hell · Action
Vampire Survivors
Shared: Bullet Hell · Indie · Action
Jets'n'Guns 2
Shared: Action · Indie · Shoot 'Em Up
Sky Force Reloaded
Shared: Shoot 'Em Up · Bullet Hell · Action
Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Action
Ikaruga
Shared: Shoot 'Em Up · Bullet Hell · Action
Touhou Blooming Chaos 2
Shared: Action · Indie · Bullet Hell
Megabonk
Shared: Indie · Bullet Hell · Action
BLUE REVOLVER
Shared: Shoot 'Em Up · Indie · Action
DRAINUS
Shared: Action · Indie · Shoot 'Em Up
Touhou Juuouen 〜 Unfinished Dream of All Living Ghost.
Shared: Action · Shoot 'Em Up · Bullet Hell