The listing, Kabitis [Steam Key] has ended.
An evil robot named Dron, has been ordered to kidnap and imprison all humans, but a young man managed to escape from clutches of Dron, his name is Aike. Kabitis noticed what had happened and decided to track down Dron and rescue the prisoners. Aike decides to join Kabitis in his quest.
In this game it is possible to play with two players, via separate joysticks. The game has almost 30 stages, which include bonus stages in story mode and additional arenas which can be unlocked. There are also other extra features which can be unlocked.
During the story mode, you can collect crystals that can be used as currency to purchase items from the store. Kabitis and Aike can also level up to become more resistant to damage, by scoring a certain amount of points by fighting the enemies.
More info: http://store.steampowered.com/app/475220/
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This game works on mac and linux too! Also includes steam trading cards
Good Luck!