Giant "wooden Block Stacking Game" Tower

A few months ago I wanted to make an original present for my dad's birthday. I started looking on the internet but nothing seemed to be the kind of thing that I was looking for....  Then the idea struck me. Why not make my own "wooden block stacking " game? Just a little bigger and  suitable for playing outdoors. I had seen it at a friends garden party but when I looked it up afterwards it was quite expensive. So why not make it myself?!

Step 1: How to Make a "wooden Block Stacking Game"

On Wikipedia it says:

"...... is played with 54 wooden blocks. Each block is three times as long as it is wide, and one fifth as thick as it is long (1.5 x 2.5 x 7.5 cm). To set up the game, the included loading tray is used to stack the initial tower which has 18 levels of three blocks placed adjacent to each other along their long side and perpendicular to the previous level (so, for example, if the blocks in the first level lie lengthwise north-south, the second level blocks will lie east-west)"
http://en.wikipedia.org/wiki/Jenga



Materials 
* Wooden beams, I used 4 beams of 4m
                                                         (13 feet and 1.48 inches)  
*Measuring tools
*hand / table saw
*Pencil
*Sanding paper

                   (8.27 inches)    (2.64 inches)      (1.65 inches)                                                                              
My blocks are 21cm long, 6.7cm wide and 4.2cm high. I know the 1 to 3 ratio is not applied but I just took some wooden beams that were available at the store and then kind of tried to fit all the pieces in the length of the beams.

When you have all the materials you can start measuring and marking where you are going to saw.
After you have done that you can start to saw!! As finishing touch you can sand down the edges for a smooth look.
Cost : Wooden beams  +/- 25eur , Box 10eur 
                                      (36 dollars)        (14 dollars)                                    
Some math:
Y= Length 
X= Width
h= Height
Z= number of blocks

X= Y/3
h=Y/5
Total height = Z/3 * h

Step 2: Play & Store