If you've never heard of Mika Mobile, that's not a huge surprise - they're a small, but fairly successful mobile game developer that focuses primarily on iOS. Their number one title (in terms of recent sales) is Zombieville USA 2, which has over 68,000 ratings on the App Store, and the most recent version of the game has averaged 5 stars. So we're clear, that's no small feat.
Their first game, Zombieville USA, was released for Android last July. I reviewed it and, frankly, wasn't a big fan (particularly because the first release seemed plagued with bugs). It's a relatively mundane time-killing side-scroller in which you button-mash zombies to death with a variety of weapons and characters.