I’d like to propose a method to define the level of a game’s complexity.
The L C, Complexity Level, of a game is the square root of the number of pages in the instruction manual when printed on full sized paper using a font size of 11 – 13 pt. Fractional results shall be rounded to the next higher integer.
Using this method the L C of YuGiOh is 8.
I use a similar method to define the difficulty of a home repair. It is based upon the number of times you must visit the hardware store to complete the job.
A Level 1 job only requires 1 one trip to the store to complete.
A Level 5 job requires 5 trips back and forth to the store – once because the fitting is left handed and twice more because the unit is 50 years old and the housing broke while taking it apart. (Too specific?)