If you are a frequent to crowdfunding website Kickstarter you may have seen a project to bring a game to the Nintendo DS under the name Diamond Trust.
The game was successful on the site and it is now available for purchase outside of the site. I guess that is a great achievement to be able to have such a fan base that your game gets fully funded.
To get the game you'll have to go to Jason Rohrer's website where he is selling the game directly at a price of $30. There are 4,510 copies left according to the website and you can pay for the game using Paypal.
If you have $30 and you'd like to play the game then head over to the Diamond Trust of London website.