Have you ever thought you might like to invest in stocks? It’s not as easy as it seems.

If you want a vivid crash course in the futility of guessing future value of stock based on raw stock value graphs, try a few rounds of The Market Guesser. It will quickly drive home the point that you can deduce nothing from past performance.

If you want a more in-depth and realistic simulation, and even a chance to earn real money with zero risk (other than wasted time), try UpDown.