We found another great tip in this post of the German blog of ProjectWizards. It mentions a cool web game by CA called PPM HERO.
You are talking over an existing project, your budget is 100,000, and there is a lot at stake, namely your reputation. When playing you need to find your way through the office, prove your manager skills and answer project  management questions while avoiding the project police. But remember, be quick. You are running out of time and budget… Sounds fun? It really is. Enjoy playing, as we did 🙂