Games like 36 Nights
Games like 36 Nights include Wall World, Balatro, Cluckmech Oasis, Vampire Survivors, and Dead Cells. We matched them by the tags players give 36 Nights on Steam (Strategy, Tower Defense, Gun Customization, Roguelike, and Shooter): closest matches first, and among equally close ones the better-known games.

Wall World
Shared: Tower Defense · Strategy · Roguelite

Balatro
Shared: Roguelike · Strategy · Pixel Graphics

Cluckmech Oasis
Shared: Strategy · Tower Defense · Roguelike

Vampire Survivors
Shared: Roguelite · Pixel Graphics · 2D

Dead Cells
Shared: Roguelike · Roguelite · 2D

Dome Keeper
Shared: Roguelike · Tower Defense · Singleplayer

Peglin
Shared: Roguelike · Strategy · Roguelite

Skul: The Hero Slayer
Shared: Roguelike · Pixel Graphics · Roguelite

Loop Hero
Shared: Roguelike · Roguelite · Pixel Graphics

Dungeon of the ENDLESS™
Shared: Strategy · Tower Defense · Roguelike

Bloons TD 6
Shared: Strategy · Tower Defense · Singleplayer

Stoneshard
Shared: Strategy · Roguelike · Pixel Graphics

Slay the Spire 2
Shared: Roguelike · Strategy · Roguelite

Slay the Spire
Shared: Roguelike · Strategy · Roguelite

Luck be a Landlord
Shared: Strategy · Roguelite · Roguelike

Plants vs. Zombies GOTY Edition
Shared: Tower Defense · Strategy · 2D

Heretic's Fork
Shared: Tower Defense · Strategy · 2D

Kingdom Rush - Tower Defense
Shared: Strategy · Tower Defense · 2D

Rogue Tower
Shared: Strategy · Tower Defense · Roguelike

Necrosmith
Shared: Tower Defense · Strategy · Roguelite

Wall World 2
Shared: Tower Defense · Roguelite · Strategy

Tangy TD
Shared: Strategy · Tower Defense · Roguelike

Vampire Crawlers: The Turbo Wildcard from Vampire Survivors
Shared: Strategy · Roguelike · Pixel Graphics

Noita
Shared: Roguelike · Pixel Graphics · 2D

