How can I add a game to my Ipod nano without deleting all games?

I have an Ipod Nano 5th generation. I just bought a game on my brother's computer as mine isn't working. My other games are not in his Itunes library. Can I add this new game to my Ipod without losing all other games on it? If so how? Thanks in advance!|||yes, just sync it normally. just say transfer info when a dialogue box pops up|||turn on home sharing, this will allow you share games, music, movies, etc