The "4077: M*A*S*H Unofficial Trivia" game is made by two fans of the TV show.
The questions are all original and come from the actual episodes. The questions are not from other sites nor from any other M*A*S*H trivia games.
The questions are designed to vary in difficulty. Some questions will be easy, while others will be much more difficult and might include tiny details that might be overlooked in an episode.
Questions are being added regularly. As of right now there are 4679 questions with the latest episode being "The Party", which is season 7, epsiode 26.