Douglas Adam's Bureaucracy, Ride to Hell: Retribution and Kaizo Mario are considered a few of the B grade games worth playing. B games are very similar to the idea of B movies. The idea of a game being "so bad that it is good". There is a lot of contraversy surrounding the debate on what actually defines a B game.
Many true gamers say that there are no B games because games that are difficult to play or poorly made are not fun to play. Others feel that if a game has a small budget that they are B games automatically. Therefore games like Street Fighter would be considered B games even though they are wildly popular and have inspired countless other video games in the same manner.