There is a very simple solution to keeping Tic-tac-toe fresh and interesting, though, and it has been thought up by a group of mathematicians. It’s being called Ultimate Tic-tac-toe and simply embeds a Tic-tac-toe board in each of the nine squares of the original game.
I am passionate about android development, and I have made tic-tac-toe game earlier in android, but the rule that you have described in this document makes me really got excited about this game, and I make sure that I would be complete this project within less amount of time.