there are two ways (that i know) to get your cursor back. to get cursor back, try to find the options button then click show cursor. if you cant find options without a cursor, press f11 to open console, type gui.cursor=true, then press enter.
phun is not gone you idiots!!!! when you go to the page where you buy algodoo, scroll down to a link that says older versions, and every phun is there from the original to 5.29