Volguard II

Volguard II was an attempt to create a sequel of the well received Volguard game to the Famicom. However, it is considered far inferior to the original. Destroying energy replenishes energy, but firing bullets depletes it. Since many of the upgrades that you can receive increase your firepower, they generally increase the degree to which you lose energy. Furthermore, once you collect the second and only other craft, and join them to form a robot, the robot moves incredibly slow, making it less worthwhile to ever join the craft together.