All games were knackered back then even the ones considered classics, then you had to hope for a patch disk with the right stuff on it with a magazine, now stuff just gets fixed via the internet.
I've got a massive 30+year game collection and the old disks are better left on the shelf. If you want a stable working version of for example X-com enemy unknown steam has a working patched version compatible with modern systems and the alien base bug has been fixed. Back in the day you just lived with it being broken even though its one of the best games ever in any countdown.
Release and hotfix is much better.
I bought Repton 2 on tape on my BBC B+. Everytime you dropped an egg the game crashed. The disappointment still weighs heavy on my mind.
Consoles have always been simple, old games were always simple (and broken). How many different types of PC configuration are there out there ?. Different kettle of fish completely.
Stuff is better now.
Just to stick my old CS hat on for a second - ARX are tied to a player's account. I'll see about getting this added to the ARX FAQ.
They function in a similar way to game extras.