Pro Evolution Soccer 2012

Nice and easy! First pick a top rated team ( Chelsea, Real Madrid, Barca etc) and edit the team by moving the best players into the squad (say Messi, Ronaldo etc depending on which team you pick of course). Start a new Club Boss season in Football Life (requires a once off 100 points to unlock from extras) and Sim the entire season after picking one of the top rated managers and let the club take care of the tactics etc. The next step is vital, after setting the sim going, make some tea, get a beer or some refreshment and then by the time you return the 30g is yours! (well 15/20min).

PS if you pick one of the best teams, you will auto be in the top league of your nation, unless you have edited it otherwise...