Games like Westale: Peelgrimage
Games like Westale: Peelgrimage include Megabonk, 20 Minutes Till Dawn, Death Must Die, Brotato, and Soulstone Survivors. We matched them by the tags players give Westale: Peelgrimage on Steam (Action Roguelike, Bullet Heaven, Bullet Hell, Shoot 'Em Up, and Roguelite): closest matches first, and among equally close ones the better-known games.

Megabonk
Shared: Action Roguelike · Bullet Heaven · Roguelite

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

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

Brotato
Shared: Action Roguelike · Bullet Hell · Bullet Heaven

Soulstone Survivors
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

Hades
Shared: Action Roguelike · Roguelite · Action

BALL x PIT
Shared: Bullet Hell · Roguelite · Action Roguelike

Tower of Babel: Survivors of Chaos
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

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

Nova Drift
Shared: Bullet Hell · Shoot 'Em Up · Action Roguelike

Hades II
Shared: Action Roguelike · Action · Roguelite

Deep Rock Galactic: Survivor
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

The Spell Brigade
Shared: Bullet Heaven · Bullet Hell · Action Roguelike

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

Yet Another Zombie Survivors
Shared: Bullet Heaven · Action Roguelike · Roguelite

Time Wasters
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Action

Army of Ruin
Shared: Action Roguelike · Bullet Hell · Roguelite

Arms of God
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

Pathogenic
Shared: Bullet Hell · Bullet Heaven · Action Roguelike

Tiny Rogues
Shared: Action Roguelike · Bullet Hell · Roguelite

Blazing Beaks
Shared: Action Roguelike · Roguelite · Action

R.I.P. - Reincarnation Insurance Program
Shared: Action Roguelike · Bullet Heaven · Bullet Hell