Games like Bobble and the Tri-Crystal
Games like Bobble and the Tri-Crystal include LUFTRAUSERS, Vampire Survivors, Planes, Bullets and Vodka, Bit Blaster XL, and ZeroRanger. We matched them by the tags players give Bobble and the Tri-Crystal on Steam (Shoot 'Em Up, Bullet Hell, Shooter, 2D, and Underwater): closest matches first, and among equally close ones the better-known games.
LUFTRAUSERS
Shared: Bullet Hell · Shoot 'Em Up · 2D
Vampire Survivors
Shared: Bullet Hell · 2D · Pixel Graphics
Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Bullet Hell · Action
Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Shooter
ZeroRanger
Shared: Shoot 'Em Up · Bullet Hell · Action
DRAINUS
Shared: Shoot 'Em Up · Shooter · Action
Star of Providence
Shared: Bullet Hell · Shoot 'Em Up · Action
BALL x PIT
Shared: Bullet Hell · Shoot 'Em Up · Action
Nova Drift
Shared: Shoot 'Em Up · Bullet Hell · Shooter
Broforce
Shared: 2D · Action · Pixel Graphics
Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Shoot 'Em Up · Bullet Hell · Action
Huntdown
Shared: Shooter · Shoot 'Em Up · Pixel Graphics
Revolution Ace
Shared: Shoot 'Em Up · Bullet Hell · Shooter
Enter the Gungeon
Shared: Bullet Hell · Pixel Graphics · 2D
Star Saviors
Shared: Shoot 'Em Up · Bullet Hell · Action
20 Minutes Till Dawn
Shared: Bullet Hell · Shoot 'Em Up · Pixel Graphics
Touhou Juuouen 〜 Unfinished Dream of All Living Ghost.
Shared: Shoot 'Em Up · Bullet Hell · Shooter
Ikaruga
Shared: Shoot 'Em Up · Bullet Hell · Shooter
Exit the Gungeon
Shared: Bullet Hell · Action · 2D
DEVIL BLADE REBOOT
Shared: Shoot 'Em Up · Shooter · Action
Jet Lancer
Shared: Shoot 'Em Up · Action · 2D
Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Shoot 'Em Up · Bullet Hell · Shooter
BLUE REVOLVER
Shared: Shoot 'Em Up · Bullet Hell · Action
DoDonPachi Resurrection
Shared: Shoot 'Em Up · Bullet Hell · Shooter