Defend your base! Use your magnetic ship to pick up chunks of junk and drop them on advancing enemies. Absorb junk into your ship and base to upgrade them and assure your victory.
Defend the castle from the attack of orcs and other creatures. Get gold in order to create soldiers and archers, you will also be able to repair and upgrade units.
Survive as long as possible by building the most efficient line of defense. Eliminate the bad guys from attacking your home base. There are also several different game modes available.