3 colour game with goals - 3 equal teams, two in possession working togeter vs one team defending. Attacking teams objective is to achive 10 passes before they can score. Once this is achived, any of the two teams can score in any of the 4 goals. If ball is lost (intercepted or bad pass goes out) team that made a mistake becomes the defending team. 

If game too hard:

reduce the amount of passes before teams can score

Make defenders win the ball 3-5 times before you switch the teams.

If too easy:

increase the amount of passess

Make one touch goal

Reduce amount of touches 

Size: depends on age but more or less 25x25m