Games like Labyrinthesis
Games like Labyrinthesis include Enter the Gungeon, Vampire Survivors, BALL x PIT, Nuclear Throne, and Tiny Rogues. We matched them by the tags players give Labyrinthesis on Steam (Bullet Hell, Action, Dungeon Crawler, Twin Stick Shooter, and Roguelike): closest matches first, and among equally close ones the better-known games.

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

Vampire Survivors
Shared: Bullet Hell · Action Roguelike · Roguelike

BALL x PIT
Shared: Action · Bullet Hell · Roguelike

Nuclear Throne
Shared: Roguelike · Bullet Hell · Action Roguelike

Tiny Rogues
Shared: Bullet Hell · Action Roguelike · Dungeon Crawler

The Binding of Isaac: Rebirth
Shared: Roguelike · Action Roguelike · Dungeon Crawler

Dead Estate
Shared: Twin Stick Shooter · Roguelike · Bullet Hell

Megabonk
Shared: Bullet Hell · Roguelike · Action Roguelike

Pathogenic
Shared: Bullet Hell · Roguelike · Dungeon Crawler

Hades
Shared: Action Roguelike · Action · Roguelike

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

Relic Hunters Zero: Remix
Shared: Action · Twin Stick Shooter · Action Roguelike

Nordic Ashes: Survivors of Ragnarok
Shared: Bullet Hell · Action Roguelike · Exploration

Hades II
Shared: Action · Roguelike · Action Roguelike

Rogue: Genesia
Shared: Bullet Hell · Action Roguelike · Twin Stick Shooter

The Binding of Isaac
Shared: Roguelike · Action Roguelike · Action

SYNTHETIK: Legion Rising
Shared: Action · Top-Down Shooter · Action Roguelike

Brotato
Shared: Bullet Hell · Roguelike · Action Roguelike

Atomicrops
Shared: Action · Bullet Hell · Roguelike

Dungreed
Shared: Action · Action Roguelike · Roguelike

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

Voidigo
Shared: Twin Stick Shooter · Bullet Hell · Action Roguelike

Noita
Shared: Roguelike · Dungeon Crawler · Action

Blazing Beaks
Shared: Roguelike · Action Roguelike · Action