I've really gotten into deck-builder card games myself.
IF you don't know what a deck-builder is, it's a card game where both players start with a small deck of weak cards, and then use the point values on the cards each turn to buy better cards from a center area. After all cards in a deck are played, the discarded and purchased cards get shuffled back together into a new deck.
Star Realms is a great one to get into. It has a ton of depth and strategy, and there's several expansion sets for it. There's even a digital version for tablet and PC.