Games like Orb Devils
Games like Orb Devils include Monster Train, Slay the Spire, Wildfrost, Slay the Spire 2, and Trials of Fire. We matched them by the tags players give Orb Devils on Steam (Card Battler, Tactical RPG, Turn-Based Tactics, Roguelite, and Perma Death): closest matches first, and among equally close ones the better-known games.

Monster Train
Shared: Card Battler · Roguelite · Turn-Based Tactics

Slay the Spire
Shared: Card Battler · Card Game · Roguelite

Wildfrost
Shared: Card Battler · Turn-Based Tactics · Roguelite

Slay the Spire 2
Shared: Card Game · Card Battler · Roguelike

Trials of Fire
Shared: Card Battler · Tactical RPG · Turn-Based Tactics

Griftlands
Shared: Card Battler · Roguelite · Card Game

9 Kings
Shared: RPG · Card Game · Roguelite

Balatro
Shared: Card Game · Roguelike · Roguelite

Inscryption
Shared: Card Battler · Card Game · Roguelite

LONESTAR
Shared: Card Battler · Turn-Based Tactics · Roguelike

Inkbound
Shared: Tactical RPG · Turn-Based Tactics · Roguelite

Super Fantasy Kingdom
Shared: Roguelite · Roguelike · RPG

Black Book
Shared: Card Battler · Turn-Based Tactics · Roguelite

Marvels Midnight Suns Digital Edition
Shared: Turn-Based Tactics · Tactical RPG · Card Game

Roguebook
Shared: Roguelite · Card Game · RPG

Invisible, Inc.
Shared: Turn-Based Tactics · Tactical RPG · Difficult

King Arthur: Knight's Tale
Shared: Tactical RPG · Turn-Based Tactics · Roguelite

StarVaders
Shared: Turn-Based Tactics · Roguelite · Difficult

As We Descend
Shared: Card Battler · Turn-Based Tactics · Roguelite

Die in the Dungeon
Shared: Card Battler · Roguelike · Card Game

天外武林 (Traveler of Wuxia)
Shared: Card Battler · Roguelike · Card Game

Darkest Dungeon® II
Shared: Turn-Based Tactics · Roguelite · Perma Death

HELLCARD
Shared: Card Battler · Roguelite · Roguelike

Mewgenics
Shared: Turn-Based Tactics · Roguelite · RPG