Addicting Games has just rolled out the latest Pencil Racer, a free online game in which you sketch 2D race courses, road-test 'em, and pass 'em on to other users.

It's Line Rider with a chunkier feature set, basically. Use the mouse to pick and scribble in track surfaces, ramps, background shapes, hazards, collectable objects and so on, then hit enter to try it out. Don't forget a start and finish line.

Unlike previous Pencil Racers, you can now drive vehicles with the arrow keys and space bar.

Satisfied? Copy the level code and post it in a comments thread (like, say, the one below). To play other people's creations, go to the file menu, click load and paste in the code.

Here's one to get you started: "1a8cc0aa38c80410b7e5dca20bdf0ca". If enough people take the plunge, we'll run a top 10 user-created levels feature like this one.

Try Platform Racing 2 and Adventure Factory for more user-created content shenanigans.

Play Pencil Racer