This is a very good game although, I have seen almost all of the answers so it does get rather boring guessing the same thing over and over again but, besides that it is a very good game 4/5.
To beat tic tack toe ---- go in the middle. Now if he goes in a corner, go in the opposite corner that he has done. Now you win:P Oh also, If he goes in a not corner space you tie:p.. Great game make more!