This game is great full screen. This is how to do it: Click -

A) Open Mac Pool

THEN

1) System Preferences
2) Universal Access
3) Zoom - ON
OPTIONS = ONLY WHEN POINTER REACHES THE EDGE
4) Maximum Zoom = slightly under 2
Minimum Zoom = slightly under 2
ZOOM PREVIEW = tick first 2 boxes
5) Exit
6) Press the two keys to the right of the space bar (apple, and alt) at the same time. Then press + key while pressing them.

GOES TO FULL SCREEN MAC POOL (same goes for any game!)

To exit Press apple and alt keys again but this time the (-) minus key to zoom out. Then go back into Universal Access and close down. HAVE FUN!