Ask Bleda Baris for a copy of the background. I have it, but I figure he should be the one to give you permission since he made the background.
The filter on the background was not disabled because its pixel size didn’t match the target resolution.
As if you need more ratings…
The theme feels pretty loosely applied. I can see how it inspired your game, but I think the dice system really hurt the overall experience. I would love to see this developed into a full game without the annoying “roll the next number” mechanic. Could be interesting to see what happens if you give the player different sets of numbers in each level.