Fan at high speed
Does your Macintosh fan run at full speed while playing Toontown?
Yes.
It does this because it is making the graphics card work really hard.
Since the graphics card is working hard & the fan is running at high speed, this will cause the computer to have moderate heat on the surface where your computer is.
Be very careful if you are using a Mac laptop on carpet, or on your legs. If on the legs put something between you and the computer or your legs will get fried, like mine, such as a cooling pad.