Actually, it isn't all that difficult. All you need is SephirothSpawn's tilemap script, as well as some choice edits to the Game_Map, Game_Character, Game_Player, Sprite_Character, and Spriteset_Map classes. All you really do in the classes I mentioned is change some numbers and add a couple lines to zoom the sprites out. It's not that hard to do, if you knwo how the numbers are used in player movement.