Fort Celeste is one of the many Roblox Assault Team forts and is the most visited one out of all of them. It is the headquarters for R.A.T. and all of its divisions. This fort was inspired by X-101st's Fort Franneh, and Celeste has inspired other forts. F.E.A.R.'s Fort Alianor 1.o is modeled after Celeste I and Fort Alianor 2.0 is modeled after Celeste II. Celeste was also the main raiding base for the enemies of R.A.T.
Fort Celeste was originally released in 2009, and has always served as the headquarters for RAT until the release of Fort Borealis.
Celeste IFort Celeste I is based off the X-101st's Fort Franneh, with similar design in the gate and inside. The only way that you could get into the fort was either from the gate, the VIP teleport or using a jetpack over the gate. Inside, there was a Leisure room, an Armory, an Underground Terminal (as of Version 4.0), several computers reserved for High Ranks, a meeting room, a prison, a private office and the Control Room. Within the Armory, there is also a VIP containing a jetpack and a Heavy Armor suit. (Which was eventually removed due to raiders abusing the armor) There was also an area with several Tank-Like vehicles and another with Jets and Helicopters. (The former being removed because of VIPs abusing them, like the Heavy Armor) Geographically, Celeste I was originally set in a tropical area, until it was moved to a more colder area with snow. On the update to "4.0", Celeste was balanced because raiders saw the fort as unfair. There was a hole in the back placed to make the fort fair for the raiders and the Jets and Heavy Armor upgrades were both removed, as of the update where people could teleport place to place, there was a plane added which would take users to VAK's Swampy Moon Outpost.
Celeste IIA revamp to the original fort, Fort Celeste II keeps some features from the original, however it has many others that Celeste I did not have. One of the notable differences is the detailed mountainous terrain and the Fort's new design, which is Tower-like instead of flat. The fort retains some details such as the Armory, Prison, Private Office, the meeting room, and Control Room. (Which now contains the new terminal) Unlike Celeste I, where raiders would go behind the fort and go through the hole, raiders would have to take a boat to the Snowmobiles, which are used to go down a nearby rank and over the Celeste walls. The fort also has new rooms, such as a recruitment room, medical area, the Divisions room (Sometimes known by RAT members as the Hot Tub) and the Sparrow Corp offices. Unlike the original Celeste, items from VIP will automatically be given to the VIP instead of the VIP having to gain them from a room. Because Celeste III is about to be released, this fort is now considered outdated by ColourTheory.
Celeste III was the planned third version of the base. It was planned in late 2011, but then scrapped in Fall of 2012. The new leader of R.A.T., cj10127, has stated that Celeste III is back under construction. The new version will feature the same building used in Celeste II, however, the interior will be re-designed. The fort will receive a new map using the same winter theme, as well a new weapons set, and other new technologies. Celeste III will be the second fort to be released under the R.A.T. development project Spectrum, with the first being Borealis.
As of today. Celeste III is scrapped and no further plans have been made to make it.