Games like SpaceMerc
Games like SpaceMerc include Vampire Survivors, Cyberhunt, Planes, Bullets and Vodka, TouHou Makuka Sai ~ Fantastic Danmaku Festival, and TouHou Makuka Sai ~ Fantastic Danmaku Festival Part II. We matched them by the tags players give SpaceMerc on Steam (Action, Indie, Shoot 'Em Up, Bullet Hell, and Casual): closest matches first, and among equally close ones the better-known games.
Vampire Survivors
Shared: Bullet Hell · Indie · Singleplayer
Cyberhunt
Shared: Action · Indie · Shoot 'Em Up
Planes, Bullets and Vodka
Shared: Action · Shoot 'Em Up · Casual
TouHou Makuka Sai ~ Fantastic Danmaku Festival
Shared: Indie · Action · Bullet Hell
TouHou Makuka Sai ~ Fantastic Danmaku Festival Part II
Shared: Indie · Bullet Hell · Shoot 'Em Up
LUFTRAUSERS
Shared: Indie · Action · Bullet Hell
Megabonk
Shared: Indie · Bullet Hell · Action
Star Saviors
Shared: Action · Shoot 'Em Up · Indie
Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Action
20 Minutes Till Dawn
Shared: Bullet Hell · Shoot 'Em Up · Singleplayer
ZeroRanger
Shared: Indie · Shoot 'Em Up · Action
RADical ROACH Remastered
Shared: Action · Indie · Casual
DRAINUS
Shared: Action · Indie · Shoot 'Em Up
Bright Memory: Infinite
Shared: Action · Indie · Singleplayer
Revolution Ace
Shared: Action · Shoot 'Em Up · Indie
Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Shoot 'Em Up · Bullet Hell · Action
Ikaruga
Shared: Shoot 'Em Up · Bullet Hell · Action
The Bug Butcher
Shared: Action · Indie · Shoot 'Em Up
Touhou Fuujinroku ~ Mountain of Faith.
Shared: Action · Indie · Bullet Hell
Brotato
Shared: Bullet Hell · Singleplayer · Indie
Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Action · Shoot 'Em Up · Bullet Hell
Symphony
Shared: Indie · Action · Shoot 'Em Up
Greedland
Shared: Shoot 'Em Up · Bullet Hell · Sci-fi
Twilight Survivors
Shared: Shoot 'Em Up · Indie · Bullet Hell