Regarding the datacrystal, may be I did something wrong, but I didn't find the difference. I have 2 datacrystal files from CS1 for 2 ends. I placed these files one by one in the www\js folder, but I didn’t find any difference in the gameplay or something additional, although I tried to explore all the locations, and as far as I know, there should have been at least one available event in a dark alley