Cancellation
Before the show's third and last season, NBC made significant budget cuts to their Saturday Morning cartoon programming as they began to gradually move away from cartoons. As a result the third season has lower quality animation with certain elements missing (Simon's goggles, Pit's sandals, etc.). Also, many episodes only featured the first party Nintendo characters (Kevin, Pit, Game Boy) to avoid paying royalties to Konami and Capcom for the uses of Simon Belmont and Mega Man respectively. The episodes were also shorter (11 minutes), and some did not have any tie-ins to Nintendo games, but other things such as fairy tales (Misadventures in Robin Hood Woods) and sports (Battle of the Baseball Know-It-Alls).
Read more about this topic: Captain N: The Game Master