Build Pickies joining the 4 required parts to make them. You have to collect the 4 parts of a certain color (green, grey, blue) in the trays which are on the side: when you joined them, the pickie will be ready and the tray free to continue with the next one. You can use the bombs that fall on the right stack to remove the useless parts.
Click on a pickie part, then click on one of the 3 trays at the left to move this part to the tray. Your goal is to join feet, body, head and arms of the same color in a tray to form a pickie of this color and be able to pass to the next.