Sprites in most of the Cut the Rope games for mobile are compressed, making them difficult to extract.
This tool attempts to do the zstd/zlib decompression in the comfort of your browser to avoid that headache.
For .xnb sprites, seexnbcliorWeb XNB Converter.For .xnb audio, seeXNBSoundConverter(to wav) andWAVToXNBSoundConverter(to xnb). You can also directly play and convert .xnb audio withvgmstream.Select: