Games like Nerd Survivors
Games like Nerd Survivors include Vampire Survivors, Megabonk, Halls of Torment, Skul: The Hero Slayer, and BALL x PIT. We matched them by the tags players give Nerd Survivors on Steam (Action, Action Roguelike, Roguelike, Bullet Hell, and Roguelite): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Megabonk
Shared: Action Roguelike · Roguelike · Roguelite

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

Skul: The Hero Slayer
Shared: Action · Action Roguelike · Roguelike

BALL x PIT
Shared: Action · Roguelite · Bullet Hell

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

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

Nuclear Throne
Shared: Action Roguelike · Roguelike · Action

Realm of the Mad God Exalt
Shared: Roguelike · Bullet Hell · Action Roguelike

Brotato
Shared: Roguelike · Action Roguelike · Bullet Hell

Dead Cells
Shared: Roguelike · Action Roguelike · Roguelite

Hades
Shared: Action Roguelike · Roguelite · Action

Rogue Legacy
Shared: Roguelike · Action Roguelike · Action

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Roguelike · Pixel Graphics

Dungreed
Shared: Action Roguelike · Roguelike · Action

Sephiria
Shared: Action Roguelike · Roguelike · Roguelite

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Hero Siege
Shared: Action Roguelike · Pixel Graphics · Roguelike

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

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

Atomicrops
Shared: Action · Roguelike · Bullet Hell

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Roguelite

Hades II
Shared: Action · Roguelike · Roguelite

The Binding of Isaac
Shared: Action Roguelike · Roguelike · Action