It's just a piece of cake: drive the green square to the yellow square. Do not fall and do not hit red stuff!
And please let me hear something from you! Leave any feedback, question and suggestion you have in the forum
How can you contribute? Making new levels and new level packs, of course! Visit the Wiki for editor instructions, and then share what you've done!
Or maybe you want to translate Physica into your language! Then, take a look here to see how!
Just drop a line on the forum if you're interested in helping.