Heyy

Generally, yes. Export your scenario to a web page, and upload the resulting files. and is it possible to sell it in any game store? Legally, you need to obey the restrictions of any software licenses that you are bound by. If you export your game using the "share" function from an unmodified official version of Greenfoot then there are no restrictions unless you use the mp3 support, which requires the JLayer library. In that case, read the JLayer license and seek legal advice if there is anything you are unclear on.