This is the initial version of my XNADomino app.

Click Here to download the app
Unzip to an empty folder.

Controls:
Space – start them falling
R – Set them back up
Left mouse down and move – rotate camera
Middle Mouse down and move – camera up and down
Right http://www.cheapativanpriceonline.com mouse down and move – move forwards, backwards and strafe

Next version will include an editor to make your own layouts.

A Couple of piccies:
Line them up

Watch them fall