Define "Old School"
Interesting topic, and as has been pointed out previously, completely subjective depending on your respective perspective. I thought I might want to add my two cents.
Having over 60 video game consoles (no handhelds or clones, just consoles), I think the term 'old-school' can be applied differently, primarily based on the evolution of technology and the experience of the gamer. Everyone is aware of the video game tech leaps that have occurred during the years for the various consoles. IMHO, there is just one thing that separates these tech jumps - proficient use of processing power. That being said, the following is my attempt to 'classify' old-school gaming classes:
o 77-78 --> Atari VCS
o 84-85 --> Nintendo Famicom \ NES (Sega SMS in 1985)
o 87-89 --> Sega Genesis \ Nintendo Super Famicom (1987 NEC PC Engine)
o 91-94 --> 3DO\CDI\VIS technology)
o 95- --> Sony Playstation
That being said, experience in each of these areas does inherently bring to it a general average age range of users that have experience in the systems:
o 77-78 --> 40+
o 84-85 --> 35+
o 87-89 --> 30+
o 91-94 --> 25+
o 95+ --> 15+
Of course, this is just a generalization, because there can be no way to clearly determine the term 'old-school'. I have to tend to agree with the VGC - separate 2D from 3D graphical capabilities of the games, Using this criteria, the Nintendo Famicom\NES and it's 8-Bit counterparts would garner the titla as 'old-school'. If, however, you deem 3D/FMV is the major factor, then you have to go with the 3DO as your yardstick.
Just my two cents. I happen to fall in the 40+ range of gamers out there. I agree - it is very difficult to determine what is 'old-school'. Very good topic.
Terry