itch.io

Hello! I was going to try to unpack the game GoodbyeEternity (18+), but I didn't find any .rpa file inside the game folder, only a very suspicious file named data.extra, which takes up almost 80%~90% of the whole game folder in size, and I think it's the " disappeared .rpa file". I tried to open it using rpaExtract, but obviously it didn't work. I just wanted to ask how I should unpack this file? (Thank you very much, I'm using a translation program, so I may not have phrased it correctly in some places)