The only difference that I see in Algodoo is the grid, other than that, it is the same. All you really need to do with lasers is put scripts, and that is a menial thing. The problem with Algobox is all the Phun users that can't get over Algodoo, I did, and for a while, I was fine with having the older Phun. Then I realized that the grid was supremely useful.