There are several modes to play this session.

Full screen mode

To play in full screen mode, click here.

Single-use link mode

Open each link in its own browser tab.

Anonymous mode

If it is impractical to distribute distinct URLs to each participant, you can give the following start URL to all participants:


  • Unlike the unique start URLs, anonymous mode does not prevent the same participant from playing twice. Therefore, it is not recommended to use this when running real experiments
  • At most 1 participants can open this URL.
  • If you already clicked the participant links for this session, you cannot use anonymous mode.

To run your experiment in a lab, see the Persistent URLs page.