Jason Rohrer's virtual board game Diamond Trust of London was the first retail DS game to be crowdfunded via Kickstarter, and now it's followed up that achievement by being the first DS game to be available outside of Kickstarter after a successful drive. In other words, you can just buy a copy now.
Rohrer is selling Diamond Trust directly from his website for $30. A counter on the site shows that there are around 4,500 copies left as of writing, which doesn't seem like very many copies at all. While missing out would teach you a lesson about scarce resources, much like we're sure the game would, it seems like a less fun way to learn.