You all sure knew Primal Rage in the 90's but the second part was in development too and it was never released:
I knew Primal Rage 2 was in existance but not as a playable game anywhere, it was an Atari arcade game that was never released in the 90's. We all know the first game Primal Rage in SEGA 16 bit version. The PR 2 game is fully playable since 2017 thanks to a development in MAME emulator specially designed for this game: It was called MAME4RAGE.
You can see a playthrough here from the game, it looks great:
https://www.youtube.com/watch?v=viI6mO2PAxoThe main and only web page for th game
https://gruntzilla94.neocities.org/UrthRage/mame4rage2.html publish the specificatiosn to play the game and how it was "ported" to be played. The game looks goods and it would be nice to see it some day in Dreamcast platform..