Sega Master System / Mark III / Game Gear
Reminiscent of games like Flying Shark and 1943, this is another of those shoot-em-ups where power-ups are all-important. It's a vertical-scroller composed of five levels, each with a major military target - oh all right, end-of-level guardian - to destroy.
Enemy waves are made up of the usual military hardware: planes, tanks, submarines and battleships. The wave structure is very similar to Flying Shark, but the bonuses are different.
Shooting certain bonus items will reveal a P, S or 1. P increases firepower, S speeds up the plane and the 1 produces a drone. Shooting the 1 cycles through four numbers, which determine where the drone attaches itself and which way it shoots. You're also supplied with cluster bombs which are handy for taking out large enemies or when multiple attackers are on screen.
It's not too difficult to get a fair way through the levels, and it's an enjoyable blast along the way. Nothing special about the graphics or the sound.