Yes, it can take some time to decrypt the encrypted Neo Geo games, but Kawaks does have an option to save the decrypted GFX, that way you only have to go through that once. Also you may be able to find decrypted set as well, and because they compress a lot better than encrypted data, the zips are much smaller to download.(posted 8408 days ago)Of course, MAME will only support the encrypted set, unless you're willing to compile your own version.