The third game in the series has been given the title 'Deposit the Chair' here, although it's possible that the third game may ultimately have had a different name/theme.
Deposit the Chair is mentioned in the original CFS article published in Recreational Computing July-August 1980.
A forthcoming issue of Recreational Computing will have an article on modifying the current program to implement Deposit the Chair.
The article goes on to outline this new scenario and seems to suggest it will appear in the next issue.
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[+] Users currently playing this game