Mindblowing, Confused, and Impressed at the same time. with only 5 colors or less this illusion trick is somewhat interesting.
Also not to mention the audio is nice and calm, I love it.
Well... I've found a bug at the first time, when I pressed "Escape" the cursor no longer lock itself and visible then I can't go back to the game for some reason so I reopen the game. You know what? who cares lol.