The name change is less to do with copyright, more to do with confusion. There's already a game called Hamster Ball, and one called Habitrail Hamster Ballz on the way, so I decided to go for a gerbil name instead.
Mouse mode 2 (Options -> Control) solves this by requiring you to hold down the mouse button. People complained that was too difficult though, so I added mouse mode 1.
Like sswift says, the game isn't entirely suited to the mouse. An analogue joypad is the best method, although I realise very few people have a joypad.
one thing that annoys me a bit is the amount of lifting up and putting down of mouse thats required to stop it going off the edge of the mousemat.
Mouse mode 2 (Options -> Control) solves this by requiring you to hold down the mouse button. People complained that was too difficult though, so I added mouse mode 1.
Like sswift says, the game isn't entirely suited to the mouse. An analogue joypad is the best method, although I realise very few people have a joypad.