Hmmm this is TOUGH. Bear in mind I'm an old coont (38 in November) and have owned every console, PC etc with lots of games - Started off on a Commodore Vic20, 31 years ago and been addicted ever since to the gaming evolution.
A top 5 is fecking tough (ideally I'd like to give a top 200
)
I agree with loads of people's list here n' there but I'm more thinking of being wowed 'At The time'.
1. Elite (BBC Micro and Acorn Electron/much later many other formats) - absolutely immense and HUGE. For people that remember and loved this there is a remake of it, totally free with **** loads of amazing add ons that you could only have wished for called OOlite ( Google it if you liked this game, you will be struck down! )
2. I'll edit this cos this is a damn tough thread (only 5!!!)