Games like Tentacuddle
Games like Tentacuddle include Skul: The Hero Slayer, Vampire Survivors, Dead Cells, Caveblazers, and Rogue Legacy. We matched them by the tags players give Tentacuddle on Steam (Action Roguelike, 2D Platformer, Roguelite, Procedural Generation, and PvE): closest matches first, and among equally close ones the better-known games.

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

Vampire Survivors
Shared: Action Roguelike · Roguelite · 2D

Dead Cells
Shared: Action Roguelike · Roguelike · Roguelite

Caveblazers
Shared: Action Roguelike · Roguelite · 2D Platformer

Rogue Legacy
Shared: Action Roguelike · Platformer · Roguelike

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

30XX
Shared: Action Roguelike · 2D Platformer · Roguelite

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

Dungreed
Shared: Action Roguelike · Roguelite · Roguelike

Hades
Shared: Action Roguelike · Roguelite · Roguelike

20XX
Shared: Action Roguelike · 2D Platformer · Platformer

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

Megabonk
Shared: Action Roguelike · Roguelite · Roguelike

BlazBlue Entropy Effect
Shared: Action Roguelike · Platformer · Action

Halls of Torment
Shared: Action Roguelike · Roguelite · Roguelike

Sephiria
Shared: Action Roguelike · Roguelite · Roguelike

Death Must Die
Shared: Action Roguelike · Roguelite · Pixel Graphics

Anomaly Agent
Shared: 2D Platformer · Action Roguelike · Platformer

Spelunky
Shared: Action Roguelike · Platformer · Roguelike

Streets of Rogue
Shared: Action Roguelike · Roguelite · Roguelike

UnderMine
Shared: Action Roguelike · Roguelite · Action

Neon Abyss
Shared: Platformer · Roguelike · Procedural Generation

Spiritfall
Shared: Action Roguelike · 2D Platformer · Roguelite

ScourgeBringer
Shared: Roguelite · Action Roguelike · Action