How to use: First, make sure you have the Weather Machine core game. Then, simply replace the cardboard machine parts in the core game with these metal ones. You're ready to start your game. Note: This is a Kickstarter edition and paid add - ons from the campaign are usually not included. When storing, keep the metal parts in a dry place to prevent rust. If they get dirty, you can use a soft cloth to gently wipe them clean.