I really like it but definitely needs improving, Interactions? Splicing them? make it like a little experiment. Don't add like a story to it, would be insane. BUT.... It's definitely cool and everything seems to be working fine in terms of the simulation, Very realistic looking but still. Oh and I had troubles downloading it, only because I didn't know what link I was looking for, Click on the ''JAR'' file and make sure you've updated it. Over all ... It's good. but.. Needs improving. Please update.