One of the most popular free to play MMORTS games available online. Based during the turmoil filled times of Ancient Rome, Call of Roma offers players a huge variety of MMORTS features, including base construction, resource gathering and management, and of course, intense PvE and PvP battles. Originally called Caesary Online, Call of Roma has entered the hearts of many as the greatest free to play, Ancient Rome themed MMORTS game, and it's not hard to see why.

As you would expect in an online strategy title, Call of Roma offers an extensive city construction and management system. Harvest your resources, gather your civilians and construct an epic city to drive envy into the hearts of your enemies. Every building in Call of Roma requires a certain type of material to build, in order to advance your city at a steady rate, you'll want to ensure a regular flow of each resource. This is done by constructing a variety of different resource buildings and upgrading them as often as possible.

Another great aspect to Call of Roma is the questing system. Unlike other MMORTS quest systems, Call of Roma's doesn't require your full attention. You can simply build, upgrade, fight or train troops and you'll be completing quests along the way. Each quest rewards you with a certain number of resources, gold and sometimes even soldiers. Some players focus on completing quests in a certain order to limit downtime waiting for resources and construction queues, but there's no right or wrong way to do it.

It wouldn't be Ancient Rome without bloodthirsty battles and Call of Roma doesn't disappoint. There's a good variety of troops to train, each specializing against other enemy troops. Do you want an entire army of cavalry? Or maybe you prefer bringing a balanced collection of infantry? The choice is yours.