Dungeons and dragons is a whole rules system, first and foremost for a pen and paper game, so apart from loaded dice it's hard to say.
There's also a lot of computer games based on dungeons and dragons, so if it's one of those the question is about, please specify the question.
Dungeons and Dragons.
dungeons and dragons
no
Dungeons & Dragons
The Production Budget for Dungeons and Dragons was $35,000,000.
Dungeons & Dragons is not, and never has been, banned in England.
Dungeons and Dragons grossed $33,771,965 worldwide.
As large as the smallest Dungeons & Dragons giant figure.
They entered through a Dungeons and Dragons themed rollercoaster.
Dungeons and Dragons grossed $15,185,241 in the domestic market.
While Dungeons & Dragons shares some characteristics with Alternate Reality Games, it is much better classified as a Tabletop Role-Playing game. There are firm rules in place for players in Dungeons & Dragons whereas ARGs have loose guidelines for them. ARGs also do not require players to assume alternate identities, or even to roleplay, which is the foundation of any Dungeons & Dragons game.
They have Dungeons and Dragons branded games for the DSI. You can buy them at any gaming store. You cannot, however, play tabletop Dungeons and Dragons on a dsi; they are two different gaming concepts (videogame and tabletop game).