The King of OX (com.westriversw.thekingofox) on Google Play
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!