Disclaimer: The original creator sold his Steam account and everything he had uploaded was deleted, I'm just reuploading it for use as assets in case me or someone else wants to use anything from here because it's outdated anyhow.

This mod is intended to replace Atlanteans with Romans. It contains new human units, new myth units, new techs and new god powers.

The mod requires UMC Ancient Unit Pack mod.
https://steamcommunity.com/sharedfiles/filedetails/?id=851936808

You have to run Rise of Rome mod on the highest priority (mod manager).

Original creators of new roman units:
Master_Foozle - SPQR (original: http://aom.heavengames.com/downloads/showfile.php?fileid=7593)
Leto II - Mods Compilation (original: http://aom.heavengames.com/downloads/showfile.php?fileid=8304&f=&st=0&ci=)
cerberus013 - Ancient Units 'Ancient' Modpack (original: http://aom.heavengames.com/downloads/showfile.php?fileid=10863)

WARNING: 1. Always use English language in settings. 2. Tale of the Dragon is needed. 3. It breaks the New Atlantis campaign, disable in the mod manager when it's necessery.

God powers and myth units:

Jupiter - GP: Statue of lightning - works like sentinels.
Janus - GP: A new beginning - Villagers build Town Centers much faster for a short time.
Mars - GP: Wartime - training human soldiers is faster for a short time.

Diana - GP: Deer Season - gives you 12 deers. | MU: Midnight Wolf
Minerva - GP: Divine Protectors - bronze on buildings without animation. | MU: Minitaur
Trivia - GP: Fake Army - gives you Legionaries, but they have only 1HP. Later ages - more Legionaries. | MU: Witch

Juno - GP: Blessing of Juno - Town centers produce much more favour and Temple train myth units much faster for a short time. | MU: Griffon
Pluto - GP: Resurrection - resurrects only Pretorian Guard and Arcus heroes. | MU: Death bird - instant kill ability with low HP.
Ceres - GP: Egg bombs - eggs generate an explosion | MU: Predator - it has draining ability like troll and Jiangshi.

Neptun - GP: Acid rain. - temporaly decreases the gathering rate from enemy farms by 80%. | MU: Living Neptun Statue
Venus - GP: Love - increases the fighting abilities of hero units. | MU: Cupid - convert any human unit. (like Monk)
Vulcan - GP: Volcano | MU: Vulcanean

Godtree:
Jupiter |Diana Minerva| |Juno Ceres| |Venus Vulcan|
Janus |Trivia Minerva| |Juno Pluto| |Venus Neptun|
Mars |Diana Trivia| |Ceres Pluto| |Vulcan Neptun|

Major god bonuses:

Jupiter: Hero units have +20% attack. | Legionary has +10% HP. 
Mars: human soldiers have +10% attack. | Leftover: Time Shift.
Janus: Myth units have +10% HP and -20% training time. | Leftover: Gaia lush.

Major and minor god specific techs:

Janus - Forum Romanum: Town Centers automatically generate gold.
Jupiter - Sacrifices: constant favour growth.
Mars - The spear of Mars: Auxiliary Infantry and Cavlary have more attack.

Diana - Ultra Instict: archers have +2.5 trackrating (they are more accurate against moving targets) |  Wolf Gang Fist: activates a boost ability on Midnight wolfs.
Minerva - "Goddess of a thousand works" increases gather rates from farms, trees and gold mines by 5%. | Agility: Minitaurs are faster and use their special attack more often
Trivia - Moon power: myth units have +10% attack and +10% speed | Witch Bloodline: Witches have +15%HP and -20% recharge time.

Juno - Eternal Youthfullnes: myth units regenerate. | Guardian: Griffon has more HP.
Pluto - Dogs of Pluto: they are similar to relic monkeys. | Black death: improves death bird recharge time.
Ceres - Cerealia: farms build faster and villagers have +15% gather rate. | Stamina: Villagers have +30% HP. | Alfa Predator: predators have more attack and HP.

Neptun - Lord of Horses: cavalry has +10% HP, attack and speed. | Helping winds: arrow ships, transport ships and fishing ships are 25% faster, siege and ramming ships are 10% faster.
Venus - Eternal Flame: Hero units regenete. | Love at first sight: Cupids convert faster.
Vulcan - Armor of Vulcan: +10% pierce and hack armour for human soldiers.| Vulcanic heat: Vulcanean's crush attack is increased by 50%. 

New human units:
Legionary: bonus vs infantry and buildings 
Equites: bonus vs archers
Auxiliary Infantry: bonus vs cavalry
Auxiliary Cavalry: bonus vs cavalry and siege
Auxiliary Archer
Preatorian Guard (Hero): they don't count as infantry. buildlimit: 8
Preatorian Archer = Arcus Hero: buildlimit: 4
Oracles and Oracle heroes remain.
Covered Ram: it can attack only buildings.
Siege Onager: the strongest catapult unit in the game.

Note: 
Legionary and Equites are strong and expensive units, auxiliary units are cheap and weak.
The Romans have the weakest archers in the game.

Note 2: Please read the disclaimer on top if you haven't already as to why this is outdated and so forth.