"Many of the items in Return to Mysterious Island can be combined to produce a new item or substance, sometimes three, four or even five are necessary to create something new. This is done in the 'Assembly Area' immediately below the inventory. Just use one item on another and if they go together they magically appear in the Assembly Area where you can see easily if you need to add more items to make something else. It's a novel idea, works very well, and would be particularly good for novice players. Also, when you make complex objects they get a small 'spanner tag' below their icon. Pick them up and place them on the Spanner button and you can disassemble anything to its component parts. A useful option if you want something that's been fashioned into something else."