Hello guys! I was waiting for this moment a lot, when Assembler comes back, because I really want to share one interesting arhive. At one russian forum Gameinator I found archive with Metro 2033 Prototype "Nightmare's world" with build number 375. This build was created at 2006, and accorting to some people, creating of Metro started at the office of GSC. This build contains a lot of stuff from S.T.A.L.K.E.R and maybe some parts of "uEngline" contains xRay's engine code. Here, we have two playable levels here and editor. Archive have already fixed version with injected OpenAL to prevent game error, and widescreen fix. I have translated readme for us, because original one has written on russian. Also, in arhive we can find design document of Metro 2033. Enjoy: https://mega.co.nz/#!ZE9EUAKY!K5Hz-_BsESw27YZlk8koiYSiXF2HW9pYewHqcAbgR1U or https://yadi.sk/d/iBCnn9FTfvLex P.S Also there is broken xRay 2 source code, but I am not sure that we interested in it.