Gaming on Web 2.0

I don't do much gaming - whether on-line, CD-rom, X-Box, etc. I get too bored with them. For me, they can be fun at first, but all too soon, I get anxious and need to do something more fun/productive (i.e. playing guitar/piano, taking a walk, spending time with my family). The games at Yahoo were interesting and easy to understand but I just can't sit still that long to get proficient at them.