I love this. I only ever had the shareware version of Doom, which I played on my dad’s 486 SX. My best friend’s dad had a 486 DX and the full version of Doom (and later Doom 2), so of course I tried to spend as much time as possible over at his house.
My parents and his parents thought it was all entirely innocent fun, amazingly enough, and even though we were only 9-10 years old, they were happy for us to play it so long as we occasionally broke it up by spending some time outside too!
Being rather young and quite rubbish at games back then, we most often played with god mode enabled. To my adult mind now that doesn’t sound quite so much fun, but we absolutely loved it – just exploring the levels and being amazed at the “3D” architecture totally blew our minds.
I have continued to play Doom throughout my life since (obviously I now own the full version on pretty much every platform it was ever released for – including, yes, the SNES!), and I think I can confidently say it is my favourite game of all time. The amount of new content that is still being produced (including by fellow DGCers, judging by some of the other threads here) is just amazing to behold, really.
(You may wonder why my profile pic is of Kyle Katarn. Well, Dark Forces may not be my favourite game of all time, but it is definitely up there – plus, someone already has Doomguy as their profile pic!).