LionsLair: 4 or 5 games would be enough for me .. as long as it would provide me with some waiting moves when i logon

4 or 5 games doesnt do that for me though .. it depends on my opponents

thats why i need about 100 games .. thats what usually keeps me busy but still can be handled easy enough in my normal schedule

some people have more spare time though and might need more games .. i can imagine 600 games to be useful

then there are people who have another goal .. like being on the most moves list or action points .. they might need more games :)

it all depends on which games you play, which opponents, how much free time you have, and what your goal is :)