If you like card games, probably try Gods Unchained[1]. Disclaimer though,
I really don't know where cryptocurrencies are used in this game. It's been getting good media coverage though. If you know the famous card game Magic The Gathering, I've read somewhere that a big name in the MTG business is now working for Gods Unchained.
Another disclaimer: I haven't tried playing this game, and I have zero idea if this is a good game or not.
[1]
https://godsunchained.com/Short answer to the bold text because i was going to mention gods unchained. I like that game and that answer wasn't a coverage i would have hoped for:
Those collectable cards that you can buy to use in their tournaments or matches are erc721 non-fungible tokens that you can trade on the open markets, just like cryptokitties for example.