At one stage Still Game was attracting over half of the available TV audience in Scotland.
Just before the fifth series started filming, a pest control team had to be called in to the studios as rats had infested Navid's shop set. The alarm was raised after Jane McCarry (who plays Isa) found a dead rat on the set.
In Episode 5.2, a customer fed up with Navid's service exclaims that she will go to Kohli's instead. This is a nod to Sanjeev Kohli, who plays the part of Navid. Kohli's is also mentioned in Episode 6.1.
Still Game's Producer and Director Michael Hines made a cameo appearance in Episode 6.7. He plays the director of the baby food advert.
For the first three series of Still Game the creators used Scottish words and spellings (for example: 'Faimly'). As Series 4 was shown in England and Wales too, from that point on standard English was used to title episodes. This was done to help national audiences better understand the titles. Additionally, the later series, characters use notably less Scottish slang and terminology. Presumably again, this was done to make the show more accessible to national audiences.