there are elements of this version of sonic 1 that i do really like. bridge zone's music is great, and i think jungle zone is a pretty obvious addition i'm surprised the genesis title didn't have (though i'd believe you if you told me the scrapped 'wood zone' from sonic 2 was ripped from the idea) but overall, this is a more barren rendition of this first title than its 16-bit counterpart. slowdown is worse than the genesis, and labyrinth zone in particular suffers from this, as if that stage needed any more help sucking complete ass. the special stages are cute and i could go either way between them or the trippy genesis ones. boss fights are inexcusably bad. it's a decent enough master system game, i guess.