key:
Click to start.
WASD or LEFT/RIGHT/UP/DOWN to fly
Mouse move to look
Shift to fly faster
Space to toggle rotation
+ to add 500 doughnuts
- to remove 500 doughnuts
m to change material (4 available)
Once started double click to toggle fullscreen (NOTE all keys bar arrow keys will be disabled)
demo (requires flash player 11 download):
link to play standalone version (better experience):
here
Let me know how it runs (assuming it does) if you can: frame-rate, number of objects it can handle etcetera.
video 1 (looks like crap so am uploading another one):
video 2 (hopfully looks a bit better..still looks balls, ah well)
Starts to slow down with 2000 – 3000 and above primitives on screen 
there is still room for some efficiency improvements but not bad for now
Demonstrates how essential good culling is, despite what the stats say whilst recording I am able to cull a full scene of 10,000 objects in under 1 ms on the release player no problems…without that it would probably die (with it you can happily navigate a scene with 50,000 objects in it at 60fps on a good machine as the majority are being culled away leaving perhaps only 500-1500 visible at any one time when they are spread out like they are in the demo)