I'm playing Space Run, a ship design and tower defense strategy game by Passtech Games and Focus Home Interactive.
The game features thirty challenging scenarios where you must place offensive and defensive weapons on your ship as you transport cargo through enemy-filled space. As you complete each mission, money is earned that can unlock new items and upgrades for existing ones. The ship layouts allow for lots of flexibility in placing your items, and careful planning must be made to ensure that complementary pieces are constructed correctly. During each mission, you can collect resources dropped by defeated ships to place more items, and redirect some weapons to more effectively take on the enemies. There is good variety in enemy types, each of which presents different challenges. Space Run takes typical tower defense mechanics and adds flexible design in a unique setting.