Famicom 4 in 1 - Shudu, Tank, Square, Highway Racing

Shudu must be another word for sudoku. Pretty cool game if you like numbers :) The game works on the rule thart each row or column or square of 9 must have the numbers from 1-9. It is a game where you can use logic and the process of elimination. GREAT FOR THE MIND :) The square game seems to be very similar to tetris but not as good from what I can see :( I am pretty sure I have played this tetris version on many of the old common multi carts such as 31in1 and 64in1 etc. and the other 2 games...well, they suck if you ask me LOL