Jumper: Griffin's Story (Xbox 360) .pak

[Puterboy1]

I'd like to extract these if you please.

[z4ruz]

Hello. I'll try to help you find script, that might probably work for your file.
If there are other games in series or by same developer, they might use the same engine. If so, the one script might work for several games. So you can try search at https://aluigi.altervista.org/quickbms.htm#search for:
1) names of:
- engine, if known
- related games
- if those are quite rare: extension, developer(s).

2) magic, which can be provided by the script:

helper.bms

Note: magic here is first 4 bytes of file, which is provided by script in two forms and orders.

3) other specific strings you can find in file.

Good luck!

[aluigi]

This is the script compatible with this format:
http://aluigi.org/bms/looney_toons_acme.bms