Irrational Games have opened up their vaults to reveal their original pitch documents for BioShock.

The pitch documents will be drip-fed to fans via Irrational Games' blog over the next few weeks.

In the first few pages of the pitch we discover just how far removed form the original concept the final version of was.

The original plot was based around infiltrating a religious cult on a remote island.

What did remain of the original story is that the cult were heavily in to genetic manipulation and morphed into the Splicers that populated Rapture.

Thanks CVG.

By Ewan Aiton