Nuke
You can download a modified which is playable version of this map from user tsr2
http://www.crymod.com/thread.php?threadid=14146&hilig...

direct download:
http://rapidshare.com/files/78190263/tornado.zip.html


The real framerate without rendering was around 0.2, that means every 5 seconds a picture in some parts, so its not playable in realtime with this amount of barrels in the year 2008.
To get this smooth video, i recorded each frame and processed all pictures to a 30 frame/sec. video

you can download the Crysis SP Demo (include Sandbox2 Editor) from:
http://www.crysisdemo.com/download.htm

Other helpfull links:

a physic map which is playable:)
http://www.crymod.com/filebase.php?fi...
Frame rendering in crisys:
http://www.facepunch.com/showthread.p...
where and how to start the editor:
http://www.crymod.com/thread.php?thre...
To build a barrelhouse:

Sandbox2 Manual:
http://doc.crymod.com/
Other free maps, tutorials and help with the sandbox editor:
http://www.crymod.com

System:
Windows Vista 32 Bit
CPU: Core2 Quad CPU Q6600 @ 2.40GHz
RAM: 2.00 GB Patriot DDR2 2GB Kit, PC8500 1066MHz
Graphic: 1 x GigaByte NX8800Ultra, 768MB 2160/612MHz
NVIDIA GeForce 8800 Ultra

Song in the Video is:
Carl Orff - Fortuna Imperatrix Mundi - II. Fortune plango vulnera (less info)