I couldn't find any references to it, so I'm guessing no-one's seen it. Basically, it's a physics simulator - imagine a cross betweem Incredible Machine and Conway's game of Life.
My brother phoned me up to tell me that he'd been messing around with it for the last couple of days. The homepage is here: http://www.phun.at/
...binaries are available for Win32 and Linux (32 or 64-bit). No source code yet. There is a MacOS port in progress, apparently.
Here's a video if anyone's curious:
http://uk.youtube.com/watch?v=0H5g9VS0ENM
Now excuse me. I've got to see if I can get resonance to work...
*watches video*
Whoa. I have GOT to try that...
Resonance works. I've made a Newton's cradle which kind-of works, and I've spent hours making little fans that spin at 2400 RPM and pouring water over them. Note that the water takes a hell of a lot of CPU power to compute, making my dual-core machine chug.
I have also constructed a perpetual motion machine, basically the newton's cradle with wheels. When I tried to make it pull a trailer it rolled over backwards and kept rolling. I shut the motors off about 10 minutes ago and it's still rolling.
My brother claims he achieved a similar feat, with a boat that could crawl out of the water and climb over fences.
Methinks the conservation of energy is a little whacked. I'll have to try and make some videos of it.
**EDIT**
(http://i89.photobucket.com/albums/k216/tapewolf/games/phun1.png)
http://i89.photobucket.com/albums/k216/tapewolf/games/phun1.png
A friend of mine was working on something like this(more generalized).
Look up "Physics 2D" on Sourceforge. Written in C#, open-source, his does a Newton's Cradle perfectly.
He had some experimental fluid physics, and could import arbitrary bitmaps as physics objects last I saw, but it's been about a year since then.(though since I was a driving force behind both of those ideas, his development cycle may have slowed down.)
I had to wine it, since it was complaining about libglew even if it was installed.
Too bad it's too slow on my PC. Maybe I'll try to make a rube goldberg machine when I have the patiance.