The best is to organise more than just one game!
I think it might be great if there are two to three different games because everyone might like different!
And best off to start with a slow game.
Like a warm up, I recommend to start off with "Johhny Cross the River", "Run for your life", or just play a little game of dodge ball.
After the warm up game, you can get into more serious games like soccer, volleyball, gold rush and so on.
Hopefully I helped enough :)
Please thank me and rate me a five star!
~Aurora