Here’s the discussion that has the links of the games at the top. The Site: 012 Incident is currently unplayable at the moment, but the rest of the games should work.
Sadly the discussion has 1100 posts on it, but if you skim through, a lot of my messages explain a bit of the lore, but I can give you a summary (it would be quite large) if you don’t want to look through the mass of posts on there.