Heavy Unit

Heavy Unit (ヘビーユニット, Hebii Yunitto) is a side scrolling shoot-em-up arcade game developed by Kaneko and published by Taito in 1988. It was ported to the PC Engine by Taito and was released on December 22, 1989. There was also a Mega Drive port by Toho entitled "Heavy Unit: Mega Drive Special" released on December 26, 1990. The player takes control of a star ship that can transform into a mecha by obtaining a specific type of power up.