ShipLord

"ShipLord is a survival game set in space where players dodge asteroids and battle bosses to collect energy and progress through unique levels. A medal-based system rewards players with upgrade points for completing levels on higher difficulties, which can be used to upgrade shield, energy tractor, and force field abilities. With over 100 upgrade points available, players can improve shield and force field duration and cool down times, as well as decrease energy spawn time."