Koan is an online game at 43g.Com. You can play Koan in your browser for free.'Koan' is a puzzle platformer telling the story of a typical city dweller on his way to enlightenment. The Protagonist follows the tutelage of a mysterious Zen teacher who sends the him on perilous journeys through metaphorical landscapes and the depths of his subconsciousness. WASD/Arrows - to move. R - Restart level. The mouse will be useful too.