Fifa 2006 - Platform: Gamecube

Increase profits in manager mode:
---------------------------------
At the start of your season, do not spend the money you have immediately 
on staff upgrades and new players. Instead, spend the money you have on 
renewing player contracts. Wait to get your players morale up first, as 
they will be more likely to accept a renewal if they are happy at the 
club. Sometimes you can cut a players salary in half, if not more. 
Make sure to save the game before renewing contracts so that you can 
start low, and increase each time if the player refuses the renewal. 
If a player refuses the renewal at a high price, and they have a high 
moral, then it may be because they are close to retirement. This can 
earn you up to 3,000 credits (off your current salary) each match if 
done well. Alongside a good sponsor, you could be earning 7,000 to 
8,000 credits each game when at home.

Full stat team:
---------------
You can make any team have full stats by editing each players stats 
and upgrading them to 99. However, be warned; if you start with this 
team in manager mode, your salary will be high. Make sure to cut their 
contracts down as soon as possible.

My FIFA store points:
---------------------
Complete the following tasks to earn the corresponding number of points 
at the My FIFA store.

Complete the Underdog challenge     : 500 points
Complete the Hat Trick challenge    : 500 points
Win the LDV Vans Trophy             : 500 points
Win the Football League 1           : 500 points
Win the Football League 2           : 500 points
Win the Scottish Cup                : 500 points
Complete the 5 Minute challenge     : 750 points
Win the League Cup                  : 750 points
Win the Football League Championship: 750 points
Win the Scottish Premier League     : 750 points
Win the English Cup                 : 1,000 points
Win the F.A. Premier League         : 1,500 points 

Start as five star team in career mode:
---------------------------------------
To do this you must unlock career teams in the My Fifa menu. 
You can do this by completing the challenges set.

Fully fit team in manager mode:
-------------------------------
When in manager mode, notice that the energy bars of your players 
decrease after each match. Save your career, then go back to the main 
menu. Load your career again. Your team will have full health again. 
Note: This may not work the first time. Save and reload the game maybe 
once or twice more for it to work.

Win everything in manager mode with any team:
---------------------------------------------
Pick a team, then start your career. Save your game. Choose "Next Match", 
then "Quick Sim". If you win the match, save your progress. If you lose a 
match, return to the main menu and load your career again. You can have as 
many chances as you want against a team, as the outcome is random every time. 
Make sure to save your progress after every win, in case you lose unexpectedly.