Games like Nocturnal Survivors
Games like Nocturnal Survivors include The Binding of Isaac, Yet Another Zombie Survivors, Nuclear Throne, Megabonk, and The Last Stand: Aftermath. We matched them by the tags players give Nocturnal Survivors on Steam (Action, Action Roguelike, Roguelike, Zombies, and Post-apocalyptic): closest matches first, and among equally close ones the better-known games.

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

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

Nuclear Throne
Shared: Action Roguelike · Roguelike · Action

Megabonk
Shared: Action Roguelike · Roguelike · Action

The Last Stand: Aftermath
Shared: Zombies · Post-apocalyptic · Action Roguelike

Hades
Shared: Action Roguelike · Action · Roguelike

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

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

BALL x PIT
Shared: Action · Roguelike · Action Roguelike

Vampire Survivors
Shared: Action Roguelike · Roguelike · Action

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

FatalZone
Shared: Action Roguelike · Zombies · Action

Hades II
Shared: Action · Roguelike · Action Roguelike

SYNTHETIK: Legion Rising
Shared: Action · Action Roguelike · Top-Down Shooter

Ravenswatch
Shared: Roguelike · Action Roguelike · Action

Risk of Rain 2
Shared: Action Roguelike · Roguelike · Action

Enter the Gungeon
Shared: Action Roguelike · Roguelike · Action

Risk of Rain (2013)
Shared: Action Roguelike · Roguelike · Action

Wedding Witch
Shared: Action Roguelike · Action · Roguelike

Splatter - Zombiecalypse Now
Shared: Action · Zombies · Top-Down Shooter

Crab Champions
Shared: Action Roguelike · Roguelike · 3D

Brotato
Shared: Roguelike · Action Roguelike · Singleplayer

Death Road to Canada
Shared: Action Roguelike · Zombies · Action

Dome Keeper
Shared: Action · Roguelike · Post-apocalyptic