Line Rider hands you an empty white page and nothing else — no preset tracks, no obstacles placed for you, just a rider waiting at the top of whatever hill you decide to draw. Every freehand stroke of the mouse becomes a piece of the physical world the sledder has to obey, which means the challenge isn't reflexes but design: a track that looks fine sketched quickly often sends the rider flying off at the first steep drop, while a slower, more deliberate line produces the kind of smooth, flowing run that feels almost choreographed once it plays out.
Click and drag with the mouse to sketch line segments that form the track, then press play to send the sledder down the path you've built. Pause and scrub through the replay at any point to see exactly where a segment needs adjusting, then edit that section without having to redraw the entire track from scratch.
If freeform physics creativity appeals to you, the drawing-based hill challenges of Draw the Hill offer a similar spirit with a more puzzle-like structure. Discover more sandbox and physics games on our all games page.