Developers: Epic MegaGames, Orange Games
Publishers: Gathering of Developers, MacPlay (Mac OS Classic)
Released: 1998, Windows, Mac OS Classic
Jazz Jackrabbit 2 was a huge step up from its predecessor, but it wasn't a huge financial success by any means thanks to it being a 2D platformer released at a time when 3D games were all the rage. However, it did gain a cult following and has become something of a platforming classic for some PC gamers.
It also has a fair amount of hidden content lying within, ranging from unused bosses to several unused graphics.