Reclaimed is a multiplayer sandbox capture the flag game, using a wooden log instead of a flag. The goal is to get the log from the center to either capture point on opposite sides.
Furnaces are very similar to Minecrafts furnace system, you place fuel in the top slot, the item you wish to smelt in the second and after a couple of seconds the fuel is depleted and your item which you wanted to smelt is turned into the output.