Games like Prophour23
Games like Prophour23 include FTL: Faster Than Light, Hades, Dungeon of the ENDLESS™, The Binding of Isaac, and The Binding of Isaac: Rebirth. We matched them by the tags players give Prophour23 on Steam (Strategy, Tower Defense, Indie, Action, and Perma Death): closest matches first, and among equally close ones the better-known games.

FTL: Faster Than Light
Shared: Strategy · Indie · Roguelike

Hades
Shared: Indie · Action · Roguelite

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

The Binding of Isaac
Shared: Indie · Replay Value · Roguelike

The Binding of Isaac: Rebirth
Shared: Indie · Replay Value · Roguelike

Wall World
Shared: Tower Defense · Strategy · Roguelite

Balatro
Shared: Strategy · Roguelike · Indie

Slay the Spire
Shared: Strategy · Roguelike · Indie

Slay the Spire 2
Shared: Strategy · Roguelike · Indie

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

Void War
Shared: Strategy · Perma Death · Roguelite

Noita
Shared: Indie · Difficult · Roguelike

Cluckmech Oasis
Shared: Strategy · Tower Defense · Roguelike

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

Dota 2
Shared: Strategy · Action · Difficult

One Step From Eden
Shared: Action · Roguelite · Strategy

We Who Are About To Die
Shared: Strategy · Action · Roguelite

GemCraft - Chasing Shadows
Shared: Strategy · Tower Defense · Indie

Orcs Must Die! 2
Shared: Tower Defense · Strategy · Action

Hades II
Shared: Action · Roguelite · Roguelike

Bloons TD 5
Shared: Strategy · Tower Defense · Action

Spelunky
Shared: Indie · Roguelike · Difficult

Orcs Must Die!
Shared: Tower Defense · Strategy · Action

X-Morph: Defense
Shared: Strategy · Tower Defense · Indie

