I couldn't get used to a trackball for gaming (Marble Madness and other such games designed specifically around trackballs excluded). That's why I sold my CH DT225 USB, which actually was bought partially with gaming in mind (to integrate with the Fighterstick and Pro Pedals I also used to have, all with the Control Manager).
The problem I have is that with a mouse, I make a quick flick to the desired area of the screen in under a tenth of a second, and then fine-tune it from there. With a trackball, there generally isn't enough surface area for me to do that without ramping up the sensitivity to ludicrous, uncontrollable levels or letting inertia carry the cursor there...while the enemy just shot you in the face.
On the other hand, that rolling inertia is exactly why it works better for Marble Madness and such in the first place.
I used to use a trackball to fps game exclusively, but switched to a wacom tablet for that. It works fine and actually has some advantage because you don't have limits really like you do with a mouse.
Wait, what? Something tells me you aren't using the bundled mouse, or the pen in pen mode for that matter (which relies on absolute coordinates whereas games rely on relative coordinates, so putting the pen within range of the tablet results in spazzed-out mouse input). I really want to know how you got it to work out.
A trackball has uses in games, depending on the game, for instance it's actually a great alternative to a joystick believe it or not. I use my trackball to control aircraft and choppers in Warrrock which doesn't work with joysticks. I have precise control, even better I would say than I would have with a joystick. If you use a mouse to control an aircraft you have a limit that you hit in turning fights which is a great disadvantage.
Let's see how well that trackball holds out in IL-2 Sturmovik: 1946 or DCS: Black Shark...I honestly want to know if you'd fare better off with a trackball over a joystick in
those titles.
It probably works out better in games with simplified flight models, where it's largely "point, fly, and shoot", but when you have to worry about the aircraft twitching about because it's on the edge of a stall or you're just handling it too roughly, and you don't know whether you've hit max deflection on a given axis or not...then again, I suppose that if you put your finger in the center of the trackball, never reposition it, and just move it 'til your finger hits the edges of the trackball base, you'd get a good approximation. (No centering force, though, for better or for worse.)
