Games like Dungless
Games like Dungless include Skul: The Hero Slayer, The Binding of Isaac: Rebirth, Dungreed, Rogue Legacy, and BlazBlue Entropy Effect. We matched them by the tags players give Dungless on Steam (Action Roguelike, Side Scroller, Dungeon Crawler, Platformer, and Action-Adventure): closest matches first, and among equally close ones the better-known games.

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

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

Dungreed
Shared: Action Roguelike · Roguelike · Dungeon Crawler

Rogue Legacy
Shared: Action Roguelike · Platformer · Indie

BlazBlue Entropy Effect
Shared: Action Roguelike · Platformer · Action-Adventure

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

Dead Cells
Shared: Action Roguelike · Roguelike · 2D

Noita
Shared: Dungeon Crawler · Roguelike · Indie

Spelunky
Shared: Action Roguelike · Platformer · Roguelike

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

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

Vampire Survivors
Shared: Action Roguelike · Indie · 2D

Anomaly Agent
Shared: Side Scroller · Action Roguelike · Platformer

Hades
Shared: Action Roguelike · Indie · Roguelike

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

UnderMine
Shared: Action Roguelike · Dungeon Crawler · Indie

Lost Castle
Shared: Action Roguelike · Side Scroller · Dungeon Crawler

Neon Abyss
Shared: Platformer · Roguelike · Procedural Generation

SANABI
Shared: Pixel Graphics · Indie · Action-Adventure

30XX
Shared: Action Roguelike · Side Scroller · Platformer

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

Blade Assault
Shared: Platformer · Roguelike · Action-Adventure

Cult of the Lamb
Shared: Action Roguelike · Dungeon Crawler · Cute

Broforce
Shared: Platformer · 2D · Side Scroller