I like playing it like a real stock market. You can buy shares each day with a maximum of whatever is set. The stock prices fluctuate so, you cannot buy any below 15, those you buy above 15 (I try to stay below 20)then you hang onto them. It is very profitable because the stocks go up and down each day. You make a decision to sell or keep and take your chances to make it big. But at 15MP and 1000 shares, your daily investment is not multi-millions. You can sell, buy each day. It is addictive.