The term "Multiplayer Online Battle Arena" (MOBA) is a relatively new way to refer to an old idea: a multiplayer, somewhat symmetrical game, in which teams of players face off against each other. It's the bread and butter of online shooters and racing games, but up to this point hasn't enjoyed much success on Android, just because mobile controls aren't well-suited to the ultra-twitchy competitions that comprise most of the genre. Developer Overdose Caffeine is trying to change that with Pocket Fleet, a free space-based MOBA.
At its heart, Pocket Fleet is a space shooter in the vein of Asteroids. You get a single, relatively small ship, two weapons, and a 2D arena.