I love surreal auras, game, movie or otherwise, so points for that out of the gate =D. Personally, I don't mind a little math puzzle, but I did break out notepad++ because I suck at doing it in my head LOL.
I like the puzzle "style" a lot, kind of has the vibe of Assassin's Creed puzzles, which I loved for being thought-provoking with just the right level of making me think without being frustrating or too cryptic to answer.
Would love to see something like this continue down that route, and have a backdrop of a story to tie in the creepy stuff!