Re-packing .dat files?

[chorecel]

I just edited a bunch of .bmp image files, and I have a folder filled with .bmp and .def files that I extracted from a graphic.dat. Now I need to repack the edited files back into a graphic.dat, but I have no idea how. Anyone know any tools I can use? Thank you!

[progste]

it can change depending on the game and engine, if the game you are trying to edit uses encryption it could be very difficult unless some already created a tool for that engine.

[chorecel]

it can change depending on the game and engine, if the game you are trying to edit uses encryption it could be very difficult unless some already created a tool for that engine.

Oh, darn... It's Taisho x Alice vol. 1.

[pumasrevenge]

You can try to import the files with AE VN Tools. It supports a few engines with .dat files, but yeah, there are so many engines which use .dat files it's possible that it won't support it.