On Purpose

This is a platform game. Players play a root sign, which can be hung on the block and then perform root sign operation on the height or width of the block.

Tips in the game are in Chinese. Here's a guide on how to play this game:

A,D to move and W or Space to Jump;

click the icons in the bottom to switch calculation methods;

R to rotate(if you are rotated you can perform calculation on the width of blocks);

< or > to switch to another level.