Tap the screen to place the moving block onto the tower below. Build your tower as high as possible without letting it fall over. The new block will slide left and right, so time your release for a perfect stack. Gain a score based on how cleanly you stack each piece. Unlock new visual styles by reaching certain levels. The tower will teeter if your placement is off-center, so aim for the bullseye to keep it stable. Surpass your high score and try to reach the cosmos!