FusionFall Retro is effectively a private server for the original game from early January of 2010. This game's server is currently being developed by womayhem and being hosted by Kevman95.

Although FusionFall: Retro is intended to mimic FusionFall, many things found in later versions of FusionFall cannot be found in FusionFall: Retro, such as the Academy, some nanos, items, and everything else after January of 2010 due to it using an older version of the client.

All information on FusionFall: Retro can be found on the FusionFall Wiki.