Games like Donut Arena
Games like Donut Arena include Vampire Survivors, Skul: The Hero Slayer, The Binding of Isaac: Rebirth, Sephiria, and Enter the Gungeon. We matched them by the tags players give Donut Arena on Steam (Action Roguelike, Competitive, Roguelike, 2D, and Cute): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · 2D · Roguelike

Skul: The Hero Slayer
Shared: Action Roguelike · Roguelike · 2D

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

Sephiria
Shared: Action Roguelike · Roguelike · Action

Enter the Gungeon
Shared: Action Roguelike · Roguelike · Pixel Graphics

Dead Cells
Shared: Roguelike · Action Roguelike · 2D

The Binding of Isaac
Shared: Action Roguelike · Roguelike · Top-Down

Rogue Legacy
Shared: Roguelike · Action Roguelike · 2D

Nuclear Throne
Shared: Action Roguelike · Roguelike · Pixel Graphics

Dungreed
Shared: Action Roguelike · Roguelike · 2D

Halls of Torment
Shared: Action Roguelike · Roguelike · Pixel Graphics

BALL x PIT
Shared: Action Roguelike · Roguelike · Action

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

Megabonk
Shared: Action Roguelike · Roguelike · Action

Hades
Shared: Action Roguelike · Roguelike · Action

Hero Siege
Shared: Action Roguelike · Roguelike · Pixel Graphics

暖雪 Warm Snow
Shared: Action Roguelike · Roguelike · 2D

Death Must Die
Shared: Action Roguelike · 2D · Pixel Graphics

UnderMine
Shared: Action Roguelike · Pixel Graphics · Action

Noita
Shared: Roguelike · 2D · Pixel Graphics

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

Have a Nice Death
Shared: Action Roguelike · 2D · Roguelike

Rocket Rats
Shared: Action Roguelike · 2D · Pixel Graphics

Rabbit and Steel
Shared: Action Roguelike · Roguelike · Cute