Dark Doors Escape Level 28 Walkthrough
a piano on left side
5×5 square with numbers and different flags color : black, red, green
hint : change the ? symbol into the correct numbers

dark doors escape stage 28 solution :
starting from top left square and the order from left to right
put in the numbers from 1, 2, 3, 4, 5, …
when the color of the flag has changed, start the number from 1
you will have the answer for each “?”
get key from piano then open door

continue for stage 29