Over Horizon
Over Horizon is a side-scrolling shoot 'em up video game developed by Pixel for the Nintendo Entertainment System , and published by Hot B in 1991 . 
<triplet> Over Horizon <subj> shoot 'em up <obj> genre <subj> video game <obj> instance of <subj> Nintendo Entertainment System <obj> platform <triplet> side-scrolling <subj> video game <obj> subclass of <triplet> Nintendo Entertainment System <subj> video game <obj> genre