The mapping was inspired by the theme. We wanted to avoid using the regular keys which are used for most of the runners(WASD etc). So we decided to go for G and J(and using mouse to select choices during the game-play) as it might change the feel of a regular runner and also increases the difficulty to remember the keys and pressing them correctly. We really appreciate you tried our game, if you have not tried the (bug free)fresh version of this game the link is in the comments below.