There are some aim trainer games like Kovaak's or Aimlabs, but those are specifically for shooters. I imagine they would be difficult on a trackball. For gener

There are some aim trainer games like Kovaak's or Aimlabs, but those are specifically for shooters. I imagine they would be difficult on a trackball. For general point and click, maybe one of the idle clicker games, like Cookie Clicker? Or just browsing the web, or playing a RTS like the other poster suggested.