In the World Cup, you can play as any of the 32 teams that qualified or any of the other 167 teams that didn't. You can customize the groups however you would like. After the set up stage, you can fight your way through the group stage and the knockout rounds. Depending on which team you picked and how well you went, you'll gain achievements.
In Elimination, you can play against up to three other players. You each pick a pre-selected amount of teams and then you must play against each other. If you are selected, you must choose a team to play against. If you win, you knock the other team out. If you lose, your team goes out. You keep going until one player remains.
At set pieces, there is a special flicking system. If you do it before your opponent and at the right time for corners, you will win the corner. For free kicks, you must get the timing right for shooting, then the keeper must save it using the same method.