Games like Fishticuffs
Games like Fishticuffs include Vampire Survivors, Megabonk, BALL x PIT, Halls of Torment, and Enter the Gungeon. We matched them by the tags players give Fishticuffs on Steam (Bullet Hell, Fishing, Roguelike, Arcade, and Funny): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · Action Roguelike · Roguelike

Megabonk
Shared: Roguelike · Bullet Hell · Action Roguelike

BALL x PIT
Shared: Bullet Hell · Arcade · Action

Halls of Torment
Shared: Bullet Hell · Action Roguelike · Roguelike

Enter the Gungeon
Shared: Bullet Hell · Roguelike · Action Roguelike

Nuclear Throne
Shared: Roguelike · Bullet Hell · Action Roguelike

Skul: The Hero Slayer
Shared: Roguelike · Action · Action Roguelike

Brotato
Shared: Bullet Hell · Roguelike · Action Roguelike

Death Must Die
Shared: Bullet Hell · Action Roguelike · Pixel Graphics

Soulstone Survivors
Shared: Bullet Hell · Roguelike · Action Roguelike

Boneraiser Minions
Shared: Bullet Hell · Action Roguelike · Pixel Graphics

Noobs Want to Live
Shared: Bullet Hell · Roguelike · Action

Nova Drift
Shared: Bullet Hell · Arcade · Action Roguelike

Dead Cells
Shared: Roguelike · Action Roguelike · Pixel Graphics

The Binding of Isaac: Rebirth
Shared: Roguelike · Action Roguelike · Pixel Graphics

Hades
Shared: Action Roguelike · Roguelike · Action

Atomicrops
Shared: Bullet Hell · Roguelike · Action

Dungreed
Shared: Roguelike · Action Roguelike · Action

Risk of Rain (2013)
Shared: Roguelike · Action Roguelike · Action

Rogue Legacy
Shared: Roguelike · Action · Action Roguelike

Streets of Rogue
Shared: Roguelike · Action Roguelike · Roguelite

Seraph's Last Stand
Shared: Bullet Hell · Action Roguelike · Roguelike

Star of Providence
Shared: Bullet Hell · Action Roguelike · Roguelite