The gems you invested for a project can be used afterwards to pay the finished game.
These guys already have done a damn fine job with Pier Solar and I know the programmer of the game who already released some of the best SNES homebrew games up to this date. So I think I can say that this project can be trusted to be a success and up to par with other high quality nintendo-licensed releases of the Super NES.
I'll try to explain it simple, step by step, for those guys who are confused by the design of the webpage.
1. Click on this link:
http://www.magicalgamefactory.com...
2. Click on "Sign in"
3. After you signed in, a new icon appears "invest in this project".
4: Write down the number of gems you want to purchse (10 gems= 1$)
5. Click on "Add to cart" and the gems will be added to your shopping cart.
6. Click on shopping cart (top right of the page) and end the purchase like any other online shop.
7. Congrats, you managed to invest in the project! ;P
For 200 gems your name will appear in the credits and for 500 you will get a special investors edition of the game.
These gems are not "used" after the investment and can be used after the project is finished to purchase the game or other things from their shop (10 gems=1$).