The King of OX is an easy and fun game of selecting "O" or "X" as fast as you can. As a teacher, you have to grade student's math test. It's incredibly simple but insanely addictive.

SIMPLE and ADDICTIVE game play!
• Rule is so simple. Just select "O" or "X". If the answer of test is right, touch "O" or "X".
• Once you start, you can't hardly put it down.

GREAT SOCIAL gameplay!
• Global/Country/Daily/Local high scores is supported.
• Teamwork with your family or friends will be helpful to make a better record.
• Compete with your facebook friends.

If you like this game, try "1to50" or "Challenging Times table" also!