Bioshock:Lost level

Do you remember the game Bioshock?Well if you don't i will remind you:It was a first-person shooter which came out in 2008 and granted huge popularity.But however there is one level that was scrapped due to being too gory.You won't find this level in the game's files or in any demos or early versions.But there is one Bioshock disc which contains this lost level.After irrational games shut down in 2014 Ken Levine took the disc with him.For now no one knows about the disc.One thing is only known:The disc contains that lost level.