I've never played it, that is why I was asking. From what I've seen it kind of looks like SNES Minecraft.
Its a 2d action/block building game that honestly has nothing to do with Minecraft, and I'd say is a even better game. Though the developer is actually more insane then Notch is. Also it is stated it isn't going to be getting anymore content updates since the developers have sold about a million copies and are now making away with the money.
It appeals to the same type of players and is a rather enjoyable little game with friends. I'd say to wait till the Steam summer sale in june and you and possibly your friends could pick it up for $2.50-$5.00 each.