Really cool idea, I think the concept of the game is overly complex but I like it a lot in theory. Remember how short the time is for guests in this room. I'm interested in seeing it completed.
I was a little confused between the description and the picture. The description seems like it's for the works like model and the picture is for the looks like. I'm not totally sure what concepts were explored.
I like the idea of tiles instead of bricks. The only issue is that you might now need a different feedback mechanism since it was the brick staying depressed before (maybe lighting up like on the wall?).
While the hieroglyphs on the table would suit the game, I believe that this concept could be further improved. As an Egyptian theme, I would have thought that the hieroglyphics would be on the wall. Wouldn't it be more interesting both visually and thematically if the hieroglyph buttons were on a "fake" wall that could be pressed in? You could even decorate the whole room to represent a tomb with hieroglyphics on the walls. The hieroglyphs could also glow which would add a nice visual effect to the game.
Really nice on the execution too. That plate of aluminum could be machined in a way to have a lip around the outer edge to keep the sand on the plate. I think the acrylic box is also a must.
I think the model matches my expectations of what was presented in the storyboard. I think it would be nice to explore different sizes, colors, and symbols to see what works best for what you want to accomplish. For example, do you want the symbols to look somewhat similar to make it harder for people to distinguish shapes, preventing them from easily pressing all buttons within 3 seconds?
It looks like the story board. Would it make more sense to make it a table top instead of the side of the table? The only tables I can think of with paneled sides are desks. You could also make it floor tiles.
Based on the design of the sketch model, I feel that the sketch model was pretty well executed. I totally agree that tiles should be used to make it clearer to the user that they are meant to be pressed.