Altoids tins are amazing things and here is yet another fun use for them. While this instructable includes a checker/chess board, tic-tac-toe, and backgammon the possibilities are really endless so feel free to add your own ideas.
Altoids 50g Tin (Rectangular)
Glue (Spray adhesive works well but a gluestick will also work)
Fimo (for making your own game pieces)
Rare Earth Magnets
Hammer (optional, you'll see why in step 5)
Safety Glasses (if you need to bust up your magnets into smaller pieces)
Remember to vote if you like it!
Magnets: Though this game is pocket size you should take care what you already have in your pocket when placing this game inside as it makes use of some very strong magnets. Some things like sensitive electronics, cameras, and especially credit cards with magnetic stripes do not play well with rare-earth magnets.
Choking Hazard: If you're making this for your kids (or with them) keep in mind that the game pieces are small and could pose a choking hazard to small children.
Step 1: Cleaning The Tin
Eat all the mints or dump them into a ziplock bag for consumption later, it never hurts to have a bag of mints in your car or desk at work.
Mint dust, while tasty, can impede the glueing portion later on. Run the tin under a tap and then dry thoroughly with paper towel. If you have a can of compressed air it wouldn't hurt to give it a quick blast just to make sure its all gone.