Why I am counted "Failed Pixel" when eliminating pixels judging by the spacing of each line. It surly is a acceptable and logical way to solve these puzzles.
it is not really a problem if you are a touhou fan. Anyway it seems to have much the concept from touhou actually. The "last boss" in LV20... isnt it too easy? and LV16-19 is much difficult than that. Anyway great game.
 "Pixelo"){kind=icon}
 "Bullet Heaven"){kind=icon}
 "Steambirds: Survival"){kind=icon}
 "Dungeon Developer"){kind=icon}
 "Meat Boy"){kind=icon}
 "Achievement Unlocked 2"){kind=icon}