Comment by Dysiode

A touch interface, for one. Emulates are find and all but I find their inaccuracy frustrating more often than not. Further, it's not just a 20 year old game on an emulator. Somebody has to port it, make graphics (for what they are worth), probably localize it. Sure it's not necessarily as hard as making a game from scratch (though that could be debated), but that doesn't mean the costs aren't similar.