Konami‘s Axelay is considered a cult classic among shoot ’em up fans.
First released on the Super Nintendo in 1992, Axelay cleverly mixes side-scrolling and vertically-scrolling blasting action, and also makes excellent use of the Super Nintendo‘s infamous ‘Mode 7’ scaling technique, to create a weird ‘cylindrical’ rolling effect on some of the levels.
Axelay is renowned for having great boss battles too. The fire guy (“Wayler”) at the end of level five is particular good. The whole game is fantastic. Different enough from most ‘bullet hell’ shooters to really stand out.
More: Axelay on Wikipedia