Prime Time was an Amiga and MS DOS release by First Row software back in 1988 and it seems was due a C64 release as well.
Three Rivers Software was the team involved, who had also worked on a Moses game (of which the C64 version is also missing), and this strange early preview seems to be the result of that so far.
Just seems to be a short introduction sequence, and then goes to a screen where you can start a game – but it then crashes out before you can do anything. Not entirely sure how this snuck out, but perhaps it was leaked by a member of the team when the game was cancelled?
There is evidence that a C64 version was being done in the press too, with a mention in RUN magazine back in November 1988 (see scans).
A story to tell here, and one we can hopefully do in the future if we find members of the team that worked on this seemingly abandoned conversion.