Original Comment by: Geoff
When I were but a lad, I was bought an original-style GameBoy for Christmas. As they tended to, it came free with Tetris. My grandad, then a spritely 70 year old, took an interest.
The following year, we had to buy him a GameBoy of his own, such had his addiction developed. Only Tetris, mind - he couldn't get his head round any other games.
Even now, he still plays Tetris, and both he and my grandma can be found playing Solitare on their newly installed PC.
There are games suitable for older generations - just not very many. I don't like the idea of the industry "waiting it out", so that when I'm 80-ish, all I can play is whatever GTA-clones are still around. Develop games for the sake of good games, without necessarily targeting anyone in particular (such as Tetris, and a whole host of other "unusual" games like it: Styx, Myst, 7th Guest, Super Monkey Ball, whatever), and you'd be surprised at the people who start to play them.