R-Type is one of the best of it's genre, being a 2D side-scrolling shoot'em up, and I had it for my Gameboy, on a cartridge that came with a collection of 20ish games in one package. It was one of the games that I played the most on the system, it was really well designed, with good controls. People who like the genre really should give it a try, is one of the best ones out there.
