About Doodle Coaster

doodlecoaster.com is a free page where you can draw a rollercoaster with one line and ride it in first-person 3D, right in your browser. The homepage puts the drawing canvas first and adds a short guide underneath: how the drawing works, why some tracks are faster than others, tips for loops and hills, and answers to common questions.

Two languages

The site is available in English and in Japanese, where the toy is known as らくがきコースター (Rakugaki Coaster). Use the language switch at the top of any page; the game inside the frame follows the language of the page.

How the game is loaded

The game itself runs inside a frame on the homepage and is loaded from its own server only after you press Start drawing, so the page stays light until you want to play. Links you share from inside the game contain your track, so anyone who opens them can ride the same coaster.