FIFA 11 (PC)
Unlimited money in Career mode
Select a team in Career mode. Purchase a player who is listed for loan. Sign the player then go to "Budget Allocation". Set the "Transfer Funds" to "Wage Budget" ratio 0:100. This makes the money for transfer funds 0%. Go to "Sell Players", and terminate the loan of the player you just signed. You should have more than $2 billion. Go to "Budget Allocation" and fix your wages funds percentage as desired.
Easy money in Manager mode
Purchase a few free agents during the transfer period. Note: You can search for free agents by using the "Search" button in the Transfer Market and changing its status to "free agents". During the next transfer period, sell them to get money. Note: Do this when you are in the final transfer period of the season and want stay in the same club (because you can sell them at the beginning of the next season. Buy players with lower ages and 70-75 overall for the best money. You will lose about 10,000 Euros in weekly wages but get it back when you sell them.
Easy "Arena..." accomplishments
As a player, kick the ball away. Then, switch to the goalkeeper and run as far away as possible from the goal while the AI controls your player and runs to the ball. Switch back to your Virtual Pro player and shoot from a distance to get the accomplishment for shooting from a distance of 32 yards. If you juggle the ball and volley, you will also get another accomplishment. This trick also helps to get other accomplishments. Note: Use a second controller to control the goalkeeper to make this easier.
Go near the player who has the ball and press S. The opposing player may fall and you will get the ball. You can also press S when the ball is coming to you. Press S when the ball is in the air, but not too far from you. You will hit like a cycle kick. Press S with a cursor key to hit the ball in the desired direction.