We recently created our page here, and in addition to the download on our blog, will be making Nix available to download from IndieDb as well.
An important note we would like to remind anyone who plays our game is that Nix was designed as an installation piece for the British Library, and as such was created to meet the specifications of a select few computers. This means that we're finding that Nix doesn't run (i.e. crashes) on lots of PCs, specifically those with newer Nvidia graphics cards. Our best bet at the moment is that the cards don't agree with the old engine version we had to use to get our Rift plugin to work.
We are working to resolve the issue, but If anyone tries Nix and has any ideas or solutions please don't hesitate to get in touch with us via a comment or email.
So thanks for checking us out, apologies if it crashes for you, but if you do download, please let us know either way!