Games like Shape Shifter: Formations
Games like Shape Shifter: Formations include Brotato, Deep Rock Galactic: Survivor, Soulstone Survivors, Vampire Survivors, and Megabonk. We matched them by the tags players give Shape Shifter: Formations on Steam (Action Roguelike, Arena Shooter, Bullet Hell, Bullet Heaven, and Local Co-Op): closest matches first, and among equally close ones the better-known games.

Brotato
Shared: Action Roguelike · Bullet Hell · Local Co-Op

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

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

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Megabonk
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

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

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

Nova Drift
Shared: Bullet Hell · Action Roguelike · Arena Shooter

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

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

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

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

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

Rogue: Genesia
Shared: Action Roguelike · Bullet Hell · Bullet Heaven

Vital Shell
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

Pathogenic
Shared: Bullet Hell · Action Roguelike · Bullet Heaven

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Roguelike

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

Voidigo
Shared: Action Roguelike · Bullet Hell · Local Co-Op

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

Bounty of One
Shared: Arena Shooter · Action Roguelike · Local Co-Op

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

NIMRODS
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

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