If your an artist who happens to own a tablet...all the games become way easier. Playing with a laptop touchpad sucks. A mouse or tablet is best. xd
But I managed to get a 10 on most of the games, even Ghostbust, with a laptop touchpad.
I found some of the games that require fast movement, like the Wash Liam, easier with my laptop touchpad, since my finger can slide across it faster than my wrist can move a mouse, but it doesn't help that one of my buttons is broken, so the clicking slows me down.
Since the scope of the gun is off center of where the mouse cursor is, I suggest aiming high and lightly bouncing/bobbing up and down to be able to hit the targets (and for all you rhythm nerds out there, to the beat of 1/2).
I don't know how high of a score I've gotten on them, but I getting better at them.
I hope.