Dog Eat Dog is a teaching game about colonialism, and how it creates internalized isms in the process. I've played it a few years ago and I consider it an excellent teaching game.

The kickstarter ends in 47 hours, and for $5 you can get a PDF, or shell out for a full book. The game designer is also looking to donate 25 copies to schools and orgs if he can hit the stretch goal before things end.

Check it out:
http://www.kickstarter.com/projects/476430982/dog-eat-dog