Originally a physical card deck-building game, Star Realms lends itself to the mobile market pretty easily. The font is ever-so-slightly hard to read, but the cards actually represent the real-life cards accurately. The Star Realms card game is a bunch of fun, so it only makes sense that the mobile game be fun as well -- especially with an easy-to-use multiplayer mode. The art on the cards is also really interesting, and it's available on Android and iOS. To top it all off, the game is also cross-platform -- so you can face your Android friend with your iPhone!
Star Realms was an easy choice for this list. It takes strategy and forethought to play. It's also a competitive game, lending to many gamers' competitive nature.
However, according to many of our writers and editors, Animation Throwdown is equally as worthy of this genre's crown.