Up-n-Down is a casual game. You need to tap on colored blocks in bubbles to let them down. When the blocks are down and at least three different colors are close to each other then these blocks are collapsed. Scores are calculated according colors of the blocks. Red blocks give maximum score, blue - minimum.
The game has two modes: arcade and relax. In the arcade mode is a normal mode: speed is increasing, scores are counted. In relax mode a player just can tap on bubbles, no score is counted.
The game is finished when player gets 50 dead (grey) blocks or total amount of block on a screen is 200. In relax mode it is never-ending.