I said 'She' in my last comment. Forgive me if I am mistaken (I should not presume anything about users by the names they use).

She says she does not like it and she is not certain that it is very interesting. To 'unlock' the scenario, you re-upload it, making sure to uncheck the 'Lock scenario' checkbox on the Share dialog frame. This will allow users on the site to have access to the speed slider and they will be able to move actors around in the window.

Que? ... Turtugas? Tulipanes? ... donde? Primero, debe 'Save the World'.

Made compatible for grid worlds. A sample grid world added to demo.