Games like Relic Dudes
Games like Relic Dudes include Vampire Survivors, Risk of Rain 2, Gunfire Reborn, The Spell Brigade, and Enter the Gungeon. We matched them by the tags players give Relic Dudes on Steam (Roguelite, Bullet Hell, Roguelike, Action Roguelike, and Action): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · Roguelite · Action Roguelike

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

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

The Spell Brigade
Shared: Roguelite · Bullet Hell · Online Co-Op

Enter the Gungeon
Shared: Bullet Hell · Roguelike · Action Roguelike

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

Ravenswatch
Shared: Roguelike · Action Roguelike · Roguelite

Brotato
Shared: Roguelike · Bullet Hell · Action Roguelike

BALL x PIT
Shared: Roguelite · Bullet Hell · Action

Halls of Torment
Shared: Roguelite · Bullet Hell · Action Roguelike

Megabonk
Shared: Roguelite · Roguelike · Action Roguelike

Streets of Rogue
Shared: Roguelite · Action Roguelike · Roguelike

Children of Morta
Shared: Roguelike · Multiplayer · Action Roguelike

Sephiria
Shared: Roguelite · Action Roguelike · Roguelike

Nuclear Throne
Shared: Roguelike · Action Roguelike · Bullet Hell

Roboquest
Shared: Roguelite · Action Roguelike · Online Co-Op

Heroes of Hammerwatch
Shared: Roguelite · Action Roguelike · Co-op

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

Death Must Die
Shared: Bullet Hell · Roguelite · Action Roguelike

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

Hero Siege
Shared: Action Roguelike · Roguelike · Multiplayer

Pass the Fear
Shared: Roguelite · Action Roguelike · Bullet Hell

Returnal™
Shared: Bullet Hell · Roguelike · Action

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