New Achievements added.
Z4 is a multiple-choice test/math game. Beat your/friend score in a given time.
FEATURES
* Small download size
* Fast Launch
* Leaderboards
* 20 Achievements
* 3 Difficulty Levels (Kids, Human Being, Genius)
* Only Integer Numbers(Z)
* Unlimited 4 arithmetic operations(addition,subtraction,multiplication,division)
