I do believe it was on a Saturday night that GG went out. I used to watch all of his games shows religiously as a child and teen.
In fact the only gameshows in the 90s that he hosted shown on a Friday night were Play Your Cards Right and Price Is Right on ITV
Sadly that's not right - two series of the Gen Game were on Fridays. The first series was indeed on Fridays at eight in 1990, and then after ratings declined a bit on Saturday nights, it was back on Fridays in 1993 (with Brucie's "make a date, Friday at eight" catchphrase) -
http://genome.ch.bbc.co.uk/schedules/bbcone/london/1993-09-10#at-20.00
I remember ratings absolutely rocketed in that slot, though, partly because it was during the brief period when ITV moved the Friday episode of The Bill to Saturdays so it was only facing You Bet (Brucie's old show vs Brucie's, er, old show) and it absolutely thrashed it. And so it was "promoted" back to Saturdays in 1994.
Off topic but: Does anyone else remember the Channel 4 panel show ‘A Short History of Everything Else’ presented by Griff Rhys Jones about five years ago? I seem to recall reading that the episodes were supposed to be an hour long but were cut down to half hour, or several episodes were edited together, which is why it came across a bit disjointed on screen. I can’t find where I read this - anyone else remember hearing this?
Yes, that does appear to be the case. Actually that whole show was seemingly something of a disaster behind the scenes because I remember when it was first announced they said they were going to do it live, with viewers able to join in, but somewhere along the line they abandoned that. It was a truly awful programme, though, the most generic panel show you'd ever seen. In fact the whole thing was more or less the panel show from Rob Brydon's Annually Retentive - which was supposed to be a parody of derivative panel shows - played for real. There was another awful C4 panel show around the same time called The Mad Bad Ad Show where they re-edited the later episodes from an hour to half an hour.
It probably happens quite a lot that there are issues on TV shows that need to be salvaged in the edit. I remember the appalling h&p@bbc, Hale and Pace's big flop BBC series, was a weird forty minute duration and they didn't say hello at the beginning or goodbye at the end, and stuff just happened with no beginning or end, so it all felt as if it had been very heavily edited down from what was supposed to be a longer programme.
Also as well, I remember circa early 1994, Trevor and Simon talking in their column in Live and Kicking magazine about filming a series for primetime BBC1, and then I never heard anything about it for ages, before this one-off turned up over a year later...
http://genome.ch.bbc.co.uk/schedules/bbcone/london/1995-07-29#at-17.50
I remember the opening titles featured odd clips of them "arriving" in the studio in lots of different ways and I always assumed that the series had to be abandoned for some reason or other, and they did this one-off as a way to use up the stuff they'd already shot.