You can play eToro just for fun or for real money. In both cases, transaction values are authentic and obtained live from stock markets. However, we strongly recommend you to practice a little bit before putting your money into any real risk.
The game looks really complicated at first sight, but fortunately it includes a complete Help area with highly detailed tutorials. I particularly like having an embedded chat client to hang out with other traders while you wait for the right moment to buy or sell.
eToro enables you to learn the basics of Forex trading and make some real money.