BLUK is a platformer that you can play with just one finger. All you have to do is touch the screen, slide your finger slightly to trace your desired trajectory, and lift your finger to watch your block fly through the air. If you aim well, the block will land neatly on the next tower. If not, then the block will fall into the abyss below.
The objective in BLUK, of course, is to get as many points as possible. To do this, you normally have to try to get as far as possible. That said, getting far isn't the only way to get points. Each time your block lands in the exact center of a tower, you'll get more points. Also, if you manage to make a big enough jump to skip a tower, you'll receive even more points. This means the game rewards precision and risk taking.
BLUK is a really fun arcade platformer that has a very simple concept and an almost perfect execution. Visually speaking, the game is also simple but beautiful.