Games like Devious Dungeon
Games like Devious Dungeon include The Binding of Isaac: Rebirth, Noita, Spelunky, Enter the Gungeon, and Vampire Survivors. We matched them by the tags players give Devious Dungeon on Steam (Action Roguelike, 2D Platformer, Dungeon Crawler, Difficult, and Platformer): closest matches first, and among equally close ones the better-known games.

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

Noita
Shared: Difficult · Dungeon Crawler · Roguelike

Spelunky
Shared: Action Roguelike · Platformer · Difficult

Enter the Gungeon
Shared: Action Roguelike · Difficult · Dungeon Crawler

Vampire Survivors
Shared: Action Roguelike · 2D · Roguelike

Downwell
Shared: Action Roguelike · 2D Platformer · Platformer

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

Dead Cells
Shared: Action Roguelike · Roguelike · 2D

Dungreed
Shared: Action Roguelike · Dungeon Crawler · Roguelike

Rogue Legacy 2
Shared: Arcade · Platformer · Difficult

Heroes of Hammerwatch II
Shared: Action Roguelike · Dungeon Crawler · Action RPG

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

Rogue Legacy
Shared: Action Roguelike · Platformer · Roguelike

Hades
Shared: Action Roguelike · Roguelike · Dungeon Crawler

Halls of Torment
Shared: Action Roguelike · Action RPG · Roguelike

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

Hades II
Shared: Action Roguelike · Roguelike · Dungeon Crawler

Celeste
Shared: Difficult · 2D Platformer · Platformer

Caveblazers
Shared: Action Roguelike · Platformer · 2D Platformer

Hero Siege
Shared: Action Roguelike · Action RPG · RPG

UnderMine
Shared: Action Roguelike · Dungeon Crawler · RPG

Moonlighter
Shared: Dungeon Crawler · Action Roguelike · Roguelike

Darkest Dungeon®
Shared: Dungeon Crawler · Difficult · Roguelike

Wizard of Legend
Shared: Action Roguelike · Dungeon Crawler · Roguelike