Games like Gatedelvers
Games like Gatedelvers include PEAK, Gunfire Reborn, Risk of Rain 2, Barony, and Ravenswatch. We matched them by the tags players give Gatedelvers on Steam (Action Roguelike, Online Co-Op, Class-Based, Dungeon Crawler, and Procedural Generation): closest matches first, and among equally close ones the better-known games.

PEAK
Shared: Online Co-Op · Multiplayer · Action Roguelike

Gunfire Reborn
Shared: Online Co-Op · Roguelike · Action Roguelike

Risk of Rain 2
Shared: Action Roguelike · Roguelike · Multiplayer

Barony
Shared: Action Roguelike · Dungeon Crawler · Online Co-Op

Ravenswatch
Shared: Action Roguelike · Online Co-Op · Roguelike

Content Warning
Shared: Online Co-Op · Action Roguelike · Procedural Generation

Children of Morta
Shared: Online Co-Op · Action Roguelike · Roguelike

Shape of Dreams
Shared: Action Roguelike · PvE · Dungeon Crawler

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

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

ELDEN RING NIGHTREIGN
Shared: Online Co-Op · Roguelike · Multiplayer

Risk of Rain Returns
Shared: Action Roguelike · Online Co-Op · Multiplayer

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

Heroes of Hammerwatch
Shared: Action Roguelike · Dungeon Crawler · Online Co-Op

Crab Champions
Shared: Action Roguelike · Roguelike · Multiplayer

Ember Knights
Shared: Action Roguelike · Online Co-Op · Dungeon Crawler

Risk of Rain (2013)
Shared: Action Roguelike · Roguelike · Online Co-Op

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

R.E.P.O.
Shared: Online Co-Op · Multiplayer · Co-op

HELLDIVERS™ 2
Shared: Online Co-Op · PvE · Multiplayer

KLETKA
Shared: Online Co-Op · PvE · Action Roguelike

LORT
Shared: Action Roguelike · Online Co-Op · Roguelike

Abyssus
Shared: Online Co-Op · Roguelike · Action Roguelike

Streets of Rogue
Shared: Action Roguelike · Roguelike · Multiplayer