Become a virtual investor, and test your skills. Buy it cheap, sell it expensive Predict the stock market, and turn $100,000 into $1,000,000 in 7 days. It won't be easy! TIP: The blue line indicates the NZD is worth 25% more than the USD, whilst the yellow indicates the NZD is worth 25% less than the USD. Trade your NZD to USD when the graph is above the blue line, and trade your USD to NZD when the graph is below the yellow line. This ensures more profit, and is a common investment strategy