Games like Sine Mora
Games like Sine Mora include Bit Blaster XL, LUFTRAUSERS, Vampire Survivors, Ikaruga, and Jets'n'Guns Gold. We matched them by the tags players give Sine Mora on Steam (Shoot 'Em Up, Indie, Bullet Hell, Action, and Arcade): closest matches first, and among equally close ones the better-known games.
Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Arcade
LUFTRAUSERS
Shared: Indie · Bullet Hell · Action
Vampire Survivors
Shared: Bullet Hell · Indie · Singleplayer
Ikaruga
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Jets'n'Guns Gold
Shared: Shoot 'Em Up · Indie · Action
Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Action · Bullet Hell
DRAINUS
Shared: Shoot 'Em Up · Indie · Action
Revolution Ace
Shared: Shoot 'Em Up · Indie · Action
ZeroRanger
Shared: Shoot 'Em Up · Indie · Bullet Hell
Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Shoot 'Em Up · Bullet Hell · Action
Star Saviors
Shared: Shoot 'Em Up · Bullet Hell · Indie
Exit the Gungeon
Shared: Indie · Arcade · Action
Nova Drift
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Touhou Tenkuushou ~ Hidden Star in Four Seasons.
Shared: Bullet Hell · Shoot 'Em Up · Indie
BALL x PIT
Shared: Action · Bullet Hell · Arcade
Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Shoot 'Em Up · Bullet Hell · Action
Sky Force Reloaded
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Touhou Kinjoukyou ～ Fossilized Wonders.
Shared: Shoot 'Em Up · Bullet Hell · Action
Cuphead
Shared: Difficult · Indie · Bullet Hell
Touhou Fuujinroku ~ Mountain of Faith.
Shared: Indie · Bullet Hell · Action
Skul: The Hero Slayer
Shared: Indie · Action · Singleplayer
Star of Providence
Shared: Bullet Hell · Shoot 'Em Up · Indie
Touhou Juuouen 〜 Unfinished Dream of All Living Ghost.
Shared: Shoot 'Em Up · Action · Bullet Hell
Zombotron
Shared: Action · Indie · Shoot 'Em Up