Draw, Scratch, Sketch.. Skribbl.io is a free drawing game.
You can draw any shape you want and they are all followed by physics rules when you draw your first line or polygon.
One game consists of a few rounds in which every round to draw their chosen word and others scribblenauts have to guess it to gain points!
Your goal is to use this physics line or polygon to push the ball to the same color cup.
When the physics ball drop into the correct color cup,the level is finished!