What version of OS is installed on the iPod touch? You need version 2.x or 3.x; if the iPod has version 1.x, you can't load additional applications on it and will need to purchase the OS upgrade ($9.95 US from the App Store).
If you have the 2.x OS on the iPod, confirm that the games don't require the 3.x OS. If there's no indication of that, post back and I'm sure someone will have additional suggestions. It will help people help you if you include details like the version of OS you have on your computer, the version of iTunes, and whether there are any error messages that appear when you attempt to sync the apps.
Regards.
If you have the 2.x OS on the iPod, confirm that the games don't require the 3.x OS. If there's no indication of that, post back and I'm sure someone will have additional suggestions. It will help people help you if you include details like the version of OS you have on your computer, the version of iTunes, and whether there are any error messages that appear when you attempt to sync the apps.
Regards.