For the first draft, I've designed the grid to hold the tiles using
and using "float: left" in the CSS.
Without "float: left" the images will stack on top each other.
Using float will arrange each image/tiles to the left of each other.
To give the images a cool flip/turn-over effect, CSS "transform" and z-index properties were one of distinguishing features. http://css3.bradshawenterprises.com/flip/
Shoutout to colouronly85 of deviantart for the images. This is for educational purposes only.
Play it here