
Physical puzzle. You need to deliver the ball to the exit. It's simple. Probably.

You need to deliver the ball to the exit. 
The red cube explodes and gives acceleration to the ball.
The yellow cube accelerates the ball.
The green cube slows the ball.
The remaining objects are obstacles and stop the ball. 

Pass the level 1

Do not use a large box at level 1

Do not use a small box at level 1

Do not use the accelerator box at level 1

Do not use the slimy box at level 1

Do not use the slat at level 1

Use all items at level 1

Pass the level 2