The Romans are the seventh civilization released in Age of Empires Online.They are the first civilization developed by Project Celeste. They were released on the March 14th, 2021, along with The Celtic Invasion of Rome Quest Pack.
The Romans were originally planned for release back in 2011, but due to the complexity of the initial tech tree, were cut in favour of Norse and Babylonian, and left in a conceptualization stage at the time of the game's official closure. On May 22rd 2019, P2FK, a lead developer for the Project Celeste dev team, announced that the Romans would be finished and released on the Project Celeste fan server.
While the Project Celeste team stated that they wanted to try to keep close to the design docs of the original team, in some instances it wasn't possible due to concepts and potential Romans assets being used for other civs like the Norse and Babylonian. Other assets were used in the making of the Alliance wars factions (ex. the original Roman walls became the Carthage Alliance walls).
- Powerful siege-based civilization.
- Features limited quantity powerful units (ie. Officer units).
Rome: The glorious Roman Empire marches triumphantly! At its height, Rome holds almost all of the known world under its yoke. Take command of Rome’s Elite officers and lead your Legionaries to victory with the support of auxiliary troops conscripted from Rome’s foreign provinces. Employ Engineers to construct your empire and bolster your siege weapons. Expand Rome’s influence through technological upgrades at the Forum. Wage Bellum Romanum and conquer the world. Roma Invicta!
Further more, the Castellum can be upgraded to a Praesidium, which marks the first time training facilities can be garrisoned. Garrisoned units grant the praesidium ranged attacks.
As per the focus of this civilization, the Romans have their greatest strength in Siege, with having "more Siege Units than any other Civ in the game"  and "Roman Siege will be a huge part of their play style and the strongest in the game." It has also been stated across numerous blog posts that the Romans are a late-game civ. This is both from the original design notes the team has from Gas Powered Games and from what the team at Project Celeste has stated in their weekly posts.
An example of this is that the Romans will be the only civilization to get two Siege units in Age 3!
The Romans will also feature a technology only unique building called the Forum, much like the Greeks and Celts. Roman players can access technologies to improve their officers and engineers, and even get access to a villager upgrade.
The Romans have a total of two war ships, similar to the Babylonian and Norse civs. The first is the liburnian, which is quite similar to the bireme, while the enneris is a unique siege ship with 2 attack types!
Timeline of Blog posts
- https://forums.projectceleste.com/threads/roman-civilization-announcement.4056/ Announcement
- https://forums.projectceleste.com/threads/design-blog-2-unit-design-theory.4154/ Final paragraph
- https://forums.projectceleste.com/threads/weekly-blog-11-spearman-battering-ram-siege-workshop.4173/ Two siege units in age 3
- https://forums.projectceleste.com/threads/weekly-blog-10-forum-cretan-bowman-armory.4159/ Tech only unique building