Tic-tac-toe 3.2.2 [free]

The player (X) plays against the Android App (O). The two players place their mark alternately on a 3 x 3 squares wide playing field. Who sets the first three of his
characters in a row, column or main diagonal is the winner.
Skill level of your opponent can be adjusted.
Idea / theory: http://en.wikipedia.org/wiki/Tic-tac-toe

• 10/27/2020: Tic-tac-toe 3.2.2
• 05/20/2020: Tic-tac-toe 3.2.1
• 02/25/2019: Tic-tac-toe 3.1.7
• 01/19/2018: Tic-tac-toe 3.1.3
• Report a new version