Primal Rage 2 is a cancelled fighting game that was in development in 1995 / 1996 by Atari for the Arcades. As we can read on Wikipedia, the game was to feature new characters that took on the form of humans and were called the Avatars, instead of the beasts / dinosaurs of the first title. During the development something went wrong and in the end Primal Rage 2 was never released. It’s currently unknown how much of the game was finished before the cancellation.
As it should be well known, this game has been leaked online. Although, it is currently unplayable.
Thanks to kieranmay for the contribution!