Games like Happy STG
Games like Happy STG include Vampire Survivors, LUFTRAUSERS, Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil, Skul: The Hero Slayer, and Touhou Fuujinroku ~ Mountain of Faith.. We matched them by the tags players give Happy STG on Steam (Action, Indie, Shoot 'Em Up, Bullet Hell, and 2D): closest matches first, and among equally close ones the better-known games.
Vampire Survivors
Shared: Bullet Hell · Indie · 2D
LUFTRAUSERS
Shared: Indie · Action · Bullet Hell
Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Shoot 'Em Up · Bullet Hell · Action
Skul: The Hero Slayer
Shared: Action · Indie · 2D
Touhou Fuujinroku ~ Mountain of Faith.
Shared: Action · Indie · Bullet Hell
Star Saviors
Shared: Action · Shoot 'Em Up · Indie
DRAINUS
Shared: Action · Indie · Shoot 'Em Up
BALL x PIT
Shared: Action · Bullet Hell · Shoot 'Em Up
ZeroRanger
Shared: Indie · Shoot 'Em Up · Action
Star of Providence
Shared: Bullet Hell · Shoot 'Em Up · Indie
TouHou Makuka Sai ~ Fantastic Danmaku Festival Part II
Shared: Indie · Bullet Hell · Shoot 'Em Up
Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Action · Shoot 'Em Up · Bullet Hell
Revolution Ace
Shared: Action · Shoot 'Em Up · Indie
Planes, Bullets and Vodka
Shared: Action · Shoot 'Em Up · Bullet Hell
Touhou Juuouen 〜 Unfinished Dream of All Living Ghost.
Shared: Action · Shoot 'Em Up · Bullet Hell
Savant - Ascent
Shared: Action · Indie · Shoot 'Em Up
Zombotron
Shared: Action · Indie · 2D
Jet Lancer
Shared: Action · Indie · Shoot 'Em Up
Touhou Tenkuushou ~ Hidden Star in Four Seasons.
Shared: Bullet Hell · Shoot 'Em Up · Indie
Cyberhunt
Shared: Action · Indie · Shoot 'Em Up
Just Shapes & Beats
Shared: Bullet Hell · Indie · Action
Windowkill
Shared: Action · Indie · Bullet Hell
Touhou Chireiden ~ Subterranean Animism.
Shared: Action · Indie · Bullet Hell
TouHou Makuka Sai ~ Fantastic Danmaku Festival
Shared: Indie · Action · Bullet Hell