I first started playing At War several years ago. When I first started playing, the main reason I had leave a game in the middle was due to wrist fatigue. That changed when I came across the vertical mouse. I now use an $8 vertical mouse and never get wrist fatigue. Now that I use a vertical mouse, I can say that I will never go back to a regular mouse. The vertical mouse is truly much more ergonomic. The $8 to $12 wired or wireless version from China works just fine, so there is no need to spend $30 to $100 on a vertical mouse. I won't post a link to one, or else Superhero will freak out and threaten to report me, as he did when all I was trying to do is help others with what has helped me, and then I posted a link to the same exact $8 wired one I am using on eBay (not even my listing and I gain nothing). People want to be like that to somebody who is just trying to help others. And that's why I share this information.