You can read basic information about Jazz Jackrabbit here.
Learn who created this game, how was it done, and most importantly, why it took the creators so long.
It's not just about the game, as there is a whole community based around it. Just as well, it's still alive after 9 years.
Obviously, this site didn't just appear overnight. Read about the rules and the people behind it here.
Eat your lima beans, Johnny.