David Fox has shared more information on the development of the original Rescue on Fractalus and its aborted sequel on his Twitter account.
Here's some fo what he had to say:
When #RescueOnFractalus launched in 1984, we held a big press conference at the Lucasfilm Ltd C Building Screening Room. We wanted to present only direct footage from the games, so produced this video which starts with 1:20 of VO and SFX only.
Source: David Fox
The timing of this is amazing actually, with the news of possible life existing on Venus. If you look at the one surface picture of Venus that exists, it looks remarkably close to the world seen in Rescue on Fractalus - especially in the fan remake, with the more pronounced yellow sky. Surely this means that the time is right for someone to pick this project up again...?