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Hello, I am analysing the PSP build of Ben 10 Alien Force Vilgax Attacks. All game data on PSP is packed into one large file called 'psp_ben10.bin' and I need help figuring out the archive structure so I can extract the contents. This is specifically for the PSP version. I am aware that other versions (like PS2/Wii/X360) of this game use a different, open filesystem, but the PSP version uses this single archive What is known -The file name is 'psp_ben10.bin' -File size: 1,125,622 KB -Signature: 'ARCV' found at file start, no offset -A header of 12 bytes is read at the start, based on observed file reads -After the header there appears to be a table of entries where each entry is 12 bytes, suggesting a structure like offset, size, flags (this is a hypothesis consistent with the 12 byte reads and allocation behavior) -The game reads chunks directly from the .bin at runtime, using standard PSP IO and cached reads I prepared a sample file containing the first 1 MiB of the archive for testing Known resource paths found in the binary (examples) global/scripts/psp.ddf global/scripts/struspsp.txt global/scripts/strsppsp.txt global/scripts/strfrpsp.txt global/scripts/char_psp.ddf global/scripts/gld_psp.ds l_anur/snd_psp/swpanr0.fsb l_bell/snd_psp/swperth.fsb l_ence/snd_psp/swpenc0.fsb l_terr/snd_psp/swpterr0.fsb global/snd_psp/swpbchil.fsb global/snd_psp/swpbstrm.fsb and there are some other ones, it's also strange that I couldn't find other paths, although there are clearly more files there Attachments I will attach a 1 MiB sample cut from the start of the archive and a screenshot of the first bytes in a hex editor. Request If anyone has seen an ARCV container layout before or can confirm the header/table layout and entry field meanings, please share examples or a small parser snippet. If you need a different sample range from the file I can extract and upload specific offsets on request. Thanks in advance for any pointers or pointers to similar formats psp_ben10 filecutter.rar