Games like Cardaire
Games like Cardaire include GWENT: The Witcher Card Game, Slay the Spire, Balatro, Animation Throwdown: The Quest for Cards, and 9 Kings. We matched them by the tags players give Cardaire on Steam (RPG, Old School, Card Game, Trading Card Game, and Strategy): closest matches first, and among equally close ones the better-known games.

GWENT: The Witcher Card Game
Shared: Card Game · RPG · Strategy

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

Balatro
Shared: Card Game · Strategy · Deckbuilding

Animation Throwdown: The Quest for Cards
Shared: Trading Card Game · Card Game · Strategy

9 Kings
Shared: RPG · Strategy · Card Game

Shadowverse: Worlds Beyond
Shared: Trading Card Game · Deckbuilding · Card Battler

Slay the Spire 2
Shared: Card Game · Strategy · Deckbuilding

Magic: The Gathering Arena
Shared: Card Game · Strategy · Trading Card Game

Cross Blitz
Shared: RPG · Card Game · Deckbuilding

Griftlands
Shared: RPG · Card Battler · Card Game

Inscryption
Shared: Card Game · Card Battler · Deckbuilding

Vampire Crawlers: The Turbo Wildcard from Vampire Survivors
Shared: Card Battler · Strategy · Card Game

Roguebook
Shared: RPG · Card Game · Strategy

DELTARUNE
Shared: RPG · Funny · Pixel Graphics

Library Of Ruina
Shared: Card Game · Strategy · Deckbuilding

Dungeons & Degenerate Gamblers
Shared: Card Game · Strategy · RPG

Super Fantasy Kingdom
Shared: RPG · Strategy · Card Game

Yu-Gi-Oh! Legacy of the Duelist
Shared: Card Game · Trading Card Game · Deckbuilding

Cardfight!! Vanguard Dear Days 2
Shared: RPG · Card Game · Strategy

One Turn Kill
Shared: Card Game · Strategy · Deckbuilding

Undertale
Shared: RPG · Funny · Pixel Graphics

天外武林 (Traveler of Wuxia)
Shared: RPG · Card Game · Deckbuilding

Loop Hero
Shared: Deckbuilding · Card Game · Pixel Graphics

Gordian Quest
Shared: RPG · Card Game · Strategy