Plug-in: WordPress Simple Game

I’m looking for a basic game plugin for my wordpress site. I want sometehing people can play, get a score, and if that score exceeds the minimum they get a prize by emailing me the results.

Are there any plugins like that or do I have to get one devleoped?

My goal is to promote this game on Facebook having people come back to my site to try and get a score and win a prize. The Facebook community is one that I own and is a soccer league. I just want people to visit my site on a constant basis to remind them about the league and to join up.

Hope this makes sense and sorry if it is in the wrong forum.