eugaet is correct. This takes the version that was originally released on the XBox 360 and PC and adds even more to it. They took that version and added Dark Elves. Then they added a LOT more teams and stadiums and made the 'Legendary Edition'. 'Chaos Edition' adds a few more teams, stadiums and star players and gave them a chance to smooth out the gameplay some.
You can pick you can either play it using real time rules or you can do turn based rules. 90% of people I know do the turn based as that's the board game. the A.I. isn't the best but that is what online play is for.