Augustus is described as 'enhanced, customizable gameplay to Caesar 3' and is a RTS Game in the Games category. There are five games similar to Augustus for a variety of platforms, including Windows, Linux, Steam, GOG.com and Mac. Most alternatives are RTS Games, City Building Games and Historical Games. The best alternative is openage, which is both free and Open Source. Other Augustus like games are CaesarIA (Free, Open Source), Age of Mythology (Paid), Caesar (Paid) and Emperor: Rise of the Middle Kingdom (Paid).
CaesarIA is an open source remake of Caesar III game released by Impressions Games in 1998, it aims to expand the possibilities of the classical city-building simulators and to add new features showing the city life. Now the game work with Windows, Linux, Mac, Haiku and Android.
Age of Mythology is based on building towns, gathering resources, creating armies, and ultimately destroying enemy units and buildings. In this way, players are able to defeat and conquer rival towns and civilizations.
As a provincial governor charged with spreading the glory of Rome your mission is clear – build cities, foster trade and industry, make money. How you accomplish this is up to you. Represent entire series of Caesar games.