

One of the biggest characteristics of Perfect Dark is its powerful search capability.

Like other Japanese sharing software, Perfect Dark has its own proprietary P2P network called "Unity". Perfect Dark requires NTFS file system instead of FAT32, because FAT32 is limited to a file size of 4 GB, while Perfect Dark can download files up to the size of 32 GB.įeatures Distributed datastore It requires to share at minimum 40 GB of hard drive space, for its "Unity" folder (a huge distributed hash table used as a distributed data store). This is intended to increase the retention rate of the Perfect Dark network. If a user does not have Perfect Dark configured with the proper settings or if the user is unable to support the settings, download rates will be restricted and priority will be given to other users. Perfect Dark requires more network bandwidth and hard disk space than Winny or Share, forcing a fairer load on all users. Perfect Dark has higher bandwidth and hard drive space requirements than its predecessors Winny and Share. "DKT" is mainly for providing effective file searching while "DHT" and "DU" is used for effective file sharing and enhancing anonymity.

While Japan's Association for Copyright of Computer Software reported that in January 2014, the number of nodes connected on Perfect Dark ( 24 000) was less than on Share ( 44 000), but more than on Winny ( 12 000), Netagent in 2018 reported Winny being the largest with 50 000 nodes followed by Perfect Dark with 30 000 nodes followed by Share with 10 000.

Perfect Dark was developed with the intention for it to be the successor to both Winny and Share software. Its author is known by the pseudonym Kaichō ( 会長, "The Chairman"). Perfect Dark ( パーフェクトダーク) is a peer-to-peer file-sharing (P2P) application from Japan designed for use with Microsoft Windows.
