"Type 97 medium tank" is 4th game of "Tank Combat series". This game represent tactical tank to tank combat in　Pacific theater. This game include 29 Japanese tanks, 10 Russian tanks, 9 US tanks and 10 anti-tank guns. Each player control one or more tanks and battle for opponent tanks or guns by scenario order. Each turn divided 6 Impulse. Each impulse repeat movement then fire and overrun. Game proceeds very slowly, but near simultaneous progress with not pre-plotted. SCALE : Each unit represent one AFV or one anti-tank gun. Each turn represent 30 seconds in real time.