How do you get new games for ipod nano-chromatic?

How do i get games onto my ipod from multiple computers?

• so i recently got a new ipod, and believe me i am not new to ipod's or itunes software, but this has stumped me. i have 2 computers in my house, i bought a game for my ipod on my downstairs computer, and synced it to my ipod, then for an unrelated reason, the internet stopped working and i could not get onto itunes, so i went to my upstairs computer and purchased 2 new games, and for some reason itunes told me that syncing the games from my upstairs computer would erase the game from my downstairs computer! as far as i can tell there is no way to manually put games on the Ipod, any help would be much appreciated!!

• Answer:

  The reason it said it would erase the game from your downstairs computer is that you can only use itunes on one computer, or it will erase everything. (if you have an Ipod nano 5g it will not erase your videos, not sure about the other ipods.)