I was born in 1992, so I have several. My oldest console is a Fairchild Channel F, from 1976, and my oldest game is Baseball for the Channel F, also from 1976. So my oldest game is 16 years older than me (!)
Here's a detailing. All of my games were pre-databased; the detailing is not necessary for your posts. All you need is to tell me how much older your game is: for example, if you were born in 1988 and have a game from 1975, you could say "13 years".
1. Vectrex - 10 years older than me.
2 games 10 years older than me.
2. Atari 5200 - 10 years older than me.
7 of 9 games 10 years older than me.
3. Colecovision. 10 years older than me.
5 of 15 games 10 years older than me.
4. Intellivision. 12 years older than me.
12 of 13 games 10-12 years older than me.
5. Odyssey2. 14 years older than me.
19 of 20 games 10-14 years older than me.
6. Atari 2600. 15 years older than me.
39 of 51 games 10-15 years older than me.
7. Fairchild Channel F. 16 years older than me.
2 games, both 16 years older than me.
The oldest you could be to post on this thread with a game is 34, if you were born in 1977 and had a Odyssey Brown Box. Given the extreme rarity of those, the oldest posters I expect to see are 29, born in 1982, with an original Magnavox Odyssey console. The younger you are, the more likely to have something. Anyone born in 1987 or later with a 2600 can post, unless it's the 2600 Jr. People born in the mid-1990s can get away with having a NES-era console as their oldest. Born circa 2000? All you need is an SNES/Genesis-era console!