ok...if you want a challenge, try this game (you can even put the game in a folder on YOUR computer....I have it open as a secondary window almost all the time)

This game is strange...after awhile you'll swear the computer has a personality. You can use English, but it can't, so it gets a couple other advantages....but it can't seem to aim the yellow 1 ball, and the 'call' pocket' for the 8 ball changes to suit the computer, whereas you have to shoot for lower left most of the time.

Still, it plays 'almost' realistically in many respects...