Can we force the user to enter a sequence of number like arr = [1,9,3,8,5,2,6,3,4] then use those number serially to apply RNG things.

For example: Generating an obstacle at Y axis but the Y number is arr[0], which is 1. Then generating another obstacle at Y axis with arr[1] as the axis number, which is 9.

I think this kinda removes the 'Randomness' from the game but still makes the game unpredictable and fun. What do you guys think? And is it acceptable for the gamejam?