Equity trading on the London Exchange. Free prizes for the best performing portfolio each month. Direct links for research and analysis.
http://www.thegreatgame.com - Read more

Option market simulation. Derivatives pricing calculators for treasury managers, hedgers and traders.
http://tradersgame.com - Read more

A free web-based futures market.
http://www.usifex.com - Read more

http://game.marketwatch.com - Read more

Windows based investing game. Includes information and download links.
http://www.roninsoft.com - Read more

Offers fixed-odds financial betting with either virtual or real accounts.
http://www.xodds.com - Read more

Virtual stock exchange. Free simulated trading.
http://www.xycoon.com - Read more