Games like Smash Out Colony
Games like Smash Out Colony include Megabonk, BALL x PIT, Vampire Survivors, Nova Drift, and Soulstone Survivors. We matched them by the tags players give Smash Out Colony on Steam (Action, Roguelite, Arcade, Bullet Hell, and Shoot 'Em Up): closest matches first, and among equally close ones the better-known games.

Megabonk
Shared: Roguelite · Bullet Heaven · Bullet Hell

BALL x PIT
Shared: Action · Roguelite · Arcade

Vampire Survivors
Shared: Roguelite · Bullet Hell · Action

Nova Drift
Shared: Roguelite · Bullet Hell · Shoot 'Em Up

Soulstone Survivors
Shared: Roguelite · Bullet Heaven · Bullet Hell

The Spell Brigade
Shared: Roguelite · Bullet Hell · Bullet Heaven

Halls of Torment
Shared: Roguelite · Bullet Hell · Action

Brotato
Shared: Bullet Hell · Roguelike · Bullet Heaven

Yet Another Zombie Survivors
Shared: Roguelite · Bullet Heaven · Arcade

Rogue: Genesia
Shared: Roguelite · Bullet Hell · Bullet Heaven

Deep Rock Galactic: Survivor
Shared: Roguelite · Bullet Hell · Bullet Heaven

Death Must Die
Shared: Roguelite · Bullet Hell · Action

Project Lazarus
Shared: Action · Bullet Hell · Arcade

Astro Prospector
Shared: Roguelite · Roguelike · Bullet Hell

Boneraiser Minions
Shared: Roguelite · Bullet Hell · Bullet Heaven

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

Planes, Bullets and Vodka
Shared: Action · Shoot 'Em Up · Bullet Hell

Time Wasters
Shared: Bullet Hell · Roguelite · Bullet Heaven

Atomicrops
Shared: Action · Bullet Hell · Roguelite

Sky Force Reloaded
Shared: Arcade · Shoot 'Em Up · Bullet Hell

Hades
Shared: Roguelite · Action · Roguelike

Tower of Babel: Survivors of Chaos
Shared: Roguelite · Bullet Hell · Bullet Heaven

Star of Providence
Shared: Roguelite · Bullet Hell · Action

Noobs Want to Live
Shared: Action · Bullet Hell · Roguelike