Cockatrice - Cockatrice is an open-source, multiplatform program for playing tabletop card games over a network.
CryptoKitties - Breed and collect adorable creatures using Ethereum
Hearthstone - Pick up your cards and throw down the gauntlet!
Mars Genesis - 10,000 unique parcels of Mars stored on the blockchain
XMage - XMage allows you to play Magic against one or more online players or computer opponents.
Cryptocats - Cute little 8-bit cats on the Ethereum Blockchain