Core Design's computer conversion of SEGA's top-down shoot'em up Action Fighter for the Sega Master System and Mega Drive.
Actually quite a good conversion of this fun little game. In Action Fighter, you start your mission as a motorcycle and must collect power-ups in order to become the Porsche, and finally the flying Porsche/Jet-fighter. In addition to this novel concept of driving & flying combination, Action Fighter also contains very challenging end bosses on every mission. Your mission orders come straight from the president, lending a bit of (albeit fake) urgency to the game. Overall, a mostly challenging, fast, and enjoyable oldie that's one of the better PC versions of console games. Recommended.