This might not actually be the first one, but one of the earliest games I definitely remember actually buying with my own money was Geoff Crammond’s Grand Prix 2. I would have been around 7 or so.

Definitely worth it, great game and the demos on the CD introduced me to Transport Tycoon, and the XCom and Worms franchises - and things kind of snowballed from there!

You are assuming that they have a personality to begin with.

As others have said, 100% a leak.

I would advise to stand on a chair or stepladder underneath the ceiling and check to see if it is still level. If you see an obvious deformation around the stain, this will be being caused by water pooling on top of the ceiling plasterboard. In which case, once the leak is sorted, you will likely need to drain the pooled water, cut out the damaged section, replace it, then replaster and repaint.

We had exactly the same issue in our last house. It was in a difficult to see spot hidden behind our kitchen cabinets. We only realised the severity of the issue when the ceiling boards gave way and fell on my head.