Catch-24

Introduction


Catch-24 is a puzzle game known and played by almost every schooled person in China. Its origin is now unclear, but it is often played by college students on train to kill the long journey time when traveling back and forth between campus and home. In radio programs the moderators and calling-in guests often play it together too. Parents could also use it to practice the arithmetic capabilities of their kids.

The scenario is simple. Four natural numbers are given, the user chooses and inserts three arithmetic operators among the numbers, and makes the expression evaluate to 24.

Requirements


The game runs on major mobile phones that have a touch screen. The User needs to use her touch pen to make choice on arithmetic operators.

Platforms


Currently, Catch-24 runs on Symbian phones (with Qt installed) and Android phones.


Copyright, intellectual property, and all related other rights belong to the author of this software. Beijing DAAV Technologies Co. Ltd. is authorized by the author to do marketing for the product.