Bump, I would like to know as well. Also, can an admin please do something about the spam in this forum?

Never mind, it is 273.

Hey Dan, where did you find the Game Id in the end?  Just so I know where to look for next time.

What is 273?

Sorry duzins, my question is where do you find these numbers?  Knowing that 2012 Fantasy Football is 273 is great, but if I knew where you got the number from I could find it for myself next time.  For instance I need to now know the game id for 2012 Fantasy Basketball is. 

Hi, my solution is to scan all the numbers, by request:
http://fantasysports.yahooapis.com/fantasy/v2/game/xxx

I've got all the game keys for range 0 - 400 in 30 minutes : )

I can publish my result sql file, if somebody needs it.

I just use a YQL query from the console:
select * from fantasysports.games where game_key in ('nfl')

The results show the actual numeric game id.

Of course, at least in YQL, you never need the actual id, you can use the alpha id, like 'nfl', and it will always give you the current season data.

This page shows the alpha game IDs, like 'nba': http://developer.yahoo.com/fantasysports/guide/game-resource.html#game-resource-desc