On a recommendation from TotalBiscuit, I have been playing a CCG-type of game called Earthcore. It's pretty interesting because it's one of those deceptively simple games that has a few, very simple, core mechanics, and then puts them together in a way that makes the gameplay complex and puzzling.
Here's a quick rundown: there's three elements (Earth, Water, and Fire) that beat each other in a strict rock-paper-scissors manner PLUS an element called Dust which loses to everything. You have monsters (most with abilities) which you play in the three slots on your side -- your opponent also has three slots. Whichever monster has the winning element in each column wins that column, destroying the opposing monster and dealing damage. Damage is dealt via a monster's
risk, so that more powerful monsters also have a higher risk and you take more damage if they're defeated. It is literally a risk/reward system. There's a few more touches that balance things out, but that's the nitty-gritty.
I am so far loving it, because even long games only run about 5-6 minutes, and yet it's very puzzling/stimulating. It's actually scratching an itch of mine for games like Pokemon and maybe Magic?
Here's the official website. It's on both Google Play and Apple, and if you say I referred you we both get gold. Just input
Kraigonus - 42 when you start up the game.