Through this test phase, the author hopes for bug reports and discussion that will help shape Perfect Dark into a better program.

Perfect Dark has higher bandwidth and hard drive space requirements than its predecessors Winny and Share.

Perfect Dark requires more network bandwidth and hard disk space than Winny or Share, forcing a fairer load on all users.

By using distributed hash tables, search performance is greatly improved compared to Winny or Share, making it unnecessary to rely on the construction of node clusters.

This is in contrast to Winny and Share, where cluster keywords, such as "DVDISO" or "アニメ"/"anime" are used to specify what types of files the user is searching for.

Perfect Dark includes an original feature named "flow": a window where text lines written by users scroll vertically.

The overall structure of the Perfect Dark network broadly resembles recent versions of HyphaNet, only with a heavier use of distributed hash tables.

Published files and boards (including automatic updates from the author, where enabled) are usually signed with 160-bit ECDSA signatures.

The author believes that initially, a layer of obscurity due to the closed-source nature of the program will frustrate attempted attacks on its anonymity, as well as deter "free riders" and junk files degrading the network.