1. Select the condition and world you want to see below the window.
2. Click "Load".
3. Then click "Start" to play the trial.
4. You can then pause, restart and stop with the other buttons.
5. Select a different settings and click "Load" again to view different worlds and conditions.
6. Refresh the page if it breaks.
7. If it is still broken email nrbramley@gmail.com :).
Select the condition, counterbalance and world you would like to play here (initial selections are random). When you are ready, click the load button.