I really does seem like an extremely big level. It was already mentioned that it's 20x20, and, if I counted the empty rooms correctly, it has at least 398 rooms!! Nearly (and perhaps really) 400!! This is most likely the biggest level ever (or has other 20x20 level got more?).
I'll play this after I finish D. 333333, if the stable version is already out by then (I don't like playing betas...). I'll comment even when I haven't played everything! I'll just warn that, for several reasons, I might finish this level months from now.
