it's my first time playing a gameboy game and i can't say for sure why but i had way too many fun. something about the slow pace and especially the slow movement when jumping pleased me a lot. gameplay seemed extremely tight, the level design was creative and some boss fights were challenging and exciting (screw that final boss) although the power ups were not diverse at all. the monochromatic graphics bring a lovely charm and the soundtrack has a way more grime vibe than in mario games. it was very worth playing, i had a lot more fun than playing any other 2d mario.