I had a web demo, but with us changing the engines and customizing this new one we do not have one built. And although you cannot donate Money socially sharing yeps just as much. The goal truthfully is to allow the community to not only live on, but to grow with the younger generation. Give them an updated Lemmings style game and allow them to upload levels and make their own versions.
I will work on getting a demo you can try and posting here. I do have some single levels that you can try out, but it is from the old idea where we were not so closely mirroring Lemmings.