Games like Overrun Survivors
Games like Overrun Survivors include Soulstone Survivors, Vampire Survivors, Halls of Torment, Nova Drift, and Death Must Die. We matched them by the tags players give Overrun Survivors on Steam (Action Roguelike, Bullet Hell, Shoot 'Em Up, Roguelite, and Perma Death): closest matches first, and among equally close ones the better-known games.

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

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

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

Megabonk
Shared: Action Roguelike · Roguelite · Bullet Hell

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

Hades
Shared: Action Roguelike · Roguelite · Roguelike

Brotato
Shared: Bullet Hell · Action Roguelike · Roguelike

Hades II
Shared: Roguelite · Action Roguelike · Roguelike

Magicraft
Shared: Action Roguelike · Bullet Hell · Roguelite

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

Hero Siege
Shared: Action Roguelike · Action RPG · RPG

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

Yet Another Zombie Survivors
Shared: Action Roguelike · Roguelite · Action RPG

Beautiful Mystic Survivors
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

I Am Legion: Stand Survivors
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Roguelike

Star of Providence
Shared: Bullet Hell · Action Roguelike · Roguelite

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

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

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

Twilight Survivors
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

Slime 3K: Rise Against Despot
Shared: Action Roguelike · Bullet Hell · Roguelite