Games like Ruin Raiders
Games like Ruin Raiders include Hades, Into the Breach, Darkest Dungeon®, The Binding of Isaac, and For The King. We matched them by the tags players give Ruin Raiders on Steam (Turn-Based Strategy, Roguelite, Difficult, Action Roguelike, and Turn-Based): closest matches first, and among equally close ones the better-known games.

Hades
Shared: Roguelite · Action Roguelike · Roguelike

Into the Breach
Shared: Turn-Based Strategy · Strategy · Roguelite

Darkest Dungeon®
Shared: Difficult · RPG · Roguelike

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

For The King
Shared: RPG · Turn-Based · Roguelike

The Last Spell
Shared: Turn-Based Strategy · RPG · Strategy

Mewgenics
Shared: Roguelite · Turn-Based Strategy · RPG

Monster Train
Shared: Roguelite · Turn-Based Strategy · Difficult

Crown Trick
Shared: Roguelite · Roguelike · RPG

Hades II
Shared: Roguelite · Roguelike · Action Roguelike

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

Quasimorph
Shared: Turn-Based Strategy · RPG · Strategy

Mutant Year Zero: Road to Eden
Shared: RPG · Strategy · Turn-Based

Slay the Spire
Shared: Turn-Based · Roguelike · Roguelite

Stoneshard
Shared: RPG · Roguelike · Turn-Based

XCOM: Enemy Unknown
Shared: Turn-Based Strategy · Turn-Based · Difficult

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

Megabonk
Shared: Roguelite · Action Roguelike · Roguelike

Nuclear Throne
Shared: Action Roguelike · Difficult · Roguelike

Streets of Rogue
Shared: Roguelite · Action Roguelike · RPG

Ravenswatch
Shared: Action Roguelike · Roguelike · Roguelite

Battle Brothers
Shared: Turn-Based Strategy · RPG · Strategy

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

Gunfire Reborn
Shared: Roguelite · Roguelike · Action Roguelike