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AlphaKretin, posted Mon Sep 19, 2022 1:57 am (73506)

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I'm trying to extract assets from The Centennial Case: A Shijima Story, on PC.

I've checked all of the *.assets files in the CCSS_Data folder, and they don't have very much.

I assume that most of what I'm looking for is in StreamingAssets/Bundle/PC, inside folders with names that look hashed, as *.unity3d files with similar names. However, when I try to extract them, using either AssetStudio or AssetRipper, I run into errors.

In AssetStudio, if I specify the Unity version as 2020.3.25, which seems to be correct, I get an index out of range error in the code for setting the version. This doesn't seem to be specific to the file I'm trying to load, I think I'm just using AssetStudio wrong, but I'm not familiar enough with it to know what to do right. The version is stripped, so I do need to specify this, and AssetRipper seems to infer 2020.3.25 as the correct version.

With AssetRipper, when I import the game folder, I get a whole host of errors. It looks like a lot of "Unable to read beyond the end of the stream" and "Read X but expected Y for asset type Z" (with Y > X).

I also note that the BMS script for Unity3d doesn't work on these files, as they have a magic of "UnityFS", not "UnityWeb".

I'm not too experienced in this field - am I doing something terribly wrong, or are these files malformed? I'd appreciate any help people can provide. I'll upload an example archive.

AlphaKretin, posted Sat Oct 15, 2022 3:15 am (73814)

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Sorry for the bump, I'm embarassed to realise I didn't actually upload the example. Let me fix that.

AlphaKretin, posted Sun Mar 26, 2023 9:52 am (76062)

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Checking in for posterity, I seem to have resolved the issue, and it was indeed user error. I needed to specify the version as 2020.3.25f1, I was missing those last two characters. The first few archives I've tried have opened with this change.