F-15 City War

F-15 City War is an unlicensed NES shooter from 1990 (or thereabouts - it lacks any on-screen copyright), combining Afterburner-style 3D-ish stages with not-very-good vertically-scrolling stages.

Hidden Developer Credit
Present at.

DESIGN BY K.T.JEAN COPYRIGHT RESERVE This could possibly be Zeng "Harry Jean" Jinlong (曾金隆), a programmer credited in some Sachen games.