Games like They Dug Too Deep
Games like They Dug Too Deep include Skul: The Hero Slayer, Vampire Survivors, Dead Cells, Hades, and FTL: Faster Than Light. We matched them by the tags players give They Dug Too Deep on Steam (Roguelike, Roguelite, Action, Grid-Based Movement, and Dwarves): closest matches first, and among equally close ones the better-known games.

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

Vampire Survivors
Shared: Roguelite · Roguelike · Singleplayer

Dead Cells
Shared: Roguelike · Roguelite · Adventure

Hades
Shared: Roguelite · Roguelike · Action

FTL: Faster Than Light
Shared: Roguelike · Singleplayer · Perma Death

Darkest Dungeon® II
Shared: Roguelite · Roguelike · Singleplayer

Crown Trick
Shared: Roguelike · Roguelite · Perma Death

Noita
Shared: Roguelike · Action · Perma Death

Rogue Legacy
Shared: Roguelike · Action · Singleplayer

Megabonk
Shared: Roguelike · Roguelite · Action

Balatro
Shared: Roguelike · Singleplayer · Roguelite

BALL x PIT
Shared: Roguelite · Action · Roguelike

Hades II
Shared: Roguelike · Action · Roguelite

Darkest Dungeon®
Shared: Roguelike · Singleplayer · Turn-Based Combat

Dungreed
Shared: Roguelike · Roguelite · Action

The Binding of Isaac
Shared: Roguelike · Action · Singleplayer

Halls of Torment
Shared: Roguelite · Roguelike · Action

Peglin
Shared: Roguelike · Roguelite · Perma Death

Sephiria
Shared: Roguelite · Roguelike · Action

Gunfire Reborn
Shared: Roguelike · Roguelite · Action

ScourgeBringer
Shared: Action · Roguelite · Roguelike

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

UnderMine
Shared: Roguelite · Action · Singleplayer

Heat Signature
Shared: Roguelike · Action · Roguelite