Paid app ($2.99) — only Google Play can deliver it
Draw your own track
Line Rider — description
Draw a track for the sledder to ride on! The classic and super addictive sandbox game, Line Rider is now available with multiple riders, audio import, and new features to help you create your track: - Scrub through the timeline to go to any point in time. - Pause in the middle of the track and see live physics updates as you draw. - Visualize the trajectory of the sledder with onion skin. - Move, adjust, and copy lines with the select tool.