1) Leap by black fighter 
Jumpjet is a 2D side-scrolling shooter game for DOS, created by Monte Variakojis and released by Montsoft in 1990 as shareware. It is said to be a relative of the older game Defender. The player controls a little Harrier-like jet that can gain or lose altitude without moving side-to-side. The player fires missiles at his targets. There are four le...