One game we use with our 14 - 16 year olds is the shark infested waters.
Objective is to turn the mat/rug over without anyone stepping off.
Have a rug or similar with different patterns on either side.
Lay it on floor.
Team all stand on mat.
Turn mat/rug over without anyone stepping off. Leaning on each other is allowed. No lifting i.e. piggybacks allowed.
It can be done, causes much laughter, but most of all can only be done if they communicate with each other and work together.
Have fun.