Well, if I remember correctly...
Magicoal was a great top-down action-adventure game(?). You can play 2 players, if you don't then you can alternate between both characters (if I remember correctly). I remember playing up to a point where I had to get a potion by mixing various different ingredients. I had no clue what to mix, I'm guessing that there's probably a FAQ out there to help with that one bit... Granted, my save game went away with my duo, but I might have it on my bank card somewhere...
(Argh, too many games, so little time.)