Games like Watercolor Hell
Games like Watercolor Hell include Vampire Survivors, Death Must Die, Halls of Torment, Enter the Gungeon, and Megabonk. We matched them by the tags players give Watercolor Hell on Steam (Indie, Action Roguelike, Bullet Hell, RPG, and Character Customization): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Indie

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

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

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

Megabonk
Shared: Action Roguelike · Indie · Bullet Hell

Hades
Shared: Action Roguelike · Indie · Action

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Indie

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

Rogue Legacy
Shared: Indie · Action Roguelike · 2D

Brotato
Shared: Bullet Hell · Action Roguelike · Indie

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Indie

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · RPG

Undertale
Shared: Indie · RPG · Choices Matter

暖雪 Warm Snow
Shared: Action Roguelike · 2D · RPG

Nuclear Throne
Shared: Action Roguelike · Indie · Bullet Hell

Windowkill
Shared: Indie · Action Roguelike · Bullet Hell

UnderMine
Shared: Action Roguelike · Indie · RPG

Asgard's Fall — Viking Survivors
Shared: Action Roguelike · Bullet Hell · Indie

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Indie · 2D

Dungreed
Shared: Action Roguelike · Indie · 2D

Hero Siege
Shared: Action Roguelike · RPG · Indie

Nordic Ashes: Survivors of Ragnarok
Shared: Action Roguelike · Bullet Hell · RPG

Seraph's Last Stand
Shared: Action Roguelike · Bullet Hell · 2D

Cultivation Story: Reincarnation
Shared: Action Roguelike · RPG · Bullet Hell