3x3x3 tic tac toe is a solved game and the first player to move can win every time without fail, and the AI goes first a vast majority of the time in this game, and can still lose, which makes it feel like a massive joke. That's why on the Atari the game was 4x4x4.
The computer sometimes doesn't even recognize when it has made a valid line, places its pieces over yours, and there is the freezing issue that has already been mentioned.
I liked the graphics, compared to the other 3d tic tac toe games on this site.