The game uses colorful blocks in a 3d world that i notice. Plain smashing of blocks is the main action to climb through levels.
Clicking is how you start, you destroy blocks to climb and unlock challenges.
The control is clicking to destroy blocks. The game has levels and bonuses to collect to increase balls.
Collect bonuses early to increase your number of balls. Most levels can be cleared faster with more balls.
Q: Controls A: Clicking to destroy blocks
Q: Objective A: Destroy blocks to climb through levels
Q: Stated feature A: Bonuses increase number of balls
Q: Main mechanic A: Smash blocks and collect bonuses