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

Brotato
Shared: Action Roguelike · Bullet Hell · Roguelike

Megabonk
Shared: Action Roguelike · Bullet Hell · Bullet Heaven

Death Must Die
Shared: Action Roguelike · Bullet Hell · Hack and Slash

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

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

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

Hades
Shared: Action Roguelike · Hack and Slash · Roguelike

Arms of God
Shared: Action Roguelike · Bullet Hell · Arena Shooter

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

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

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelike

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

BALL x PIT
Shared: Bullet Hell · Action Roguelike · Shoot 'Em Up

Time Wasters
Shared: Action Roguelike · Bullet Hell · Arena Shooter

Noobs Are Coming
Shared: Action Roguelike · Arena Shooter · Bullet Hell

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

Yet Another Zombie Survivors
Shared: Action Roguelike · Bullet Heaven · Top-Down Shooter

Army of Ruin
Shared: Action Roguelike · Bullet Hell · Hack and Slash

Hades II
Shared: Action Roguelike · Hack and Slash · Roguelike

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

Pathogenic
Shared: Bullet Hell · Action Roguelike · Top-Down Shooter

Apocalypse Party
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter

Geometry Arena
Shared: Arena Shooter · Hack and Slash · Bullet Heaven

God Of Weapons
Shared: Action Roguelike · Bullet Hell · Arena Shooter