Finally i thought about something! It is called "Kingdom Wars"
In Kingdom Wars there are 2 teams of 10. Blue team are the Good guys and the Red team are the Evil guys. Each one has a castle and a dungeon to the castle. It is similar to Capture the flag. Both teams try to get the opposite faction's treasure, which is hidden in the dungeons and protected by a parkour challenge. The players in each team are :
---> 3 builders, given 3 stacks of blocks each to rebuild the castle's walls.
---> 3 skirmishers, given 3 stacks of TNT each to blow the opposite castle's walls and attack.
---> 3 defenders, given diamond gear to defend from the enemy skirmishers.
---> 1 leader, given everything above to multitask.
It's basically a 15 - 20 minute game. Hope you like the idea.