Black Pit v1.2.2 is a ROM hack or a custom level, likely for a game like Super Mario 64 or other similar titles based on the version number implying incremental updates. It likely involves modified levels, challenges, or gameplay elements and would have been created by a member of a ROM hacking community.  More information about its origin and creators would be needed to give a more complete introduction.

Black Pit v1.2.2

Bio F.R.E.A.K.S. (Europe)