Project Visitor is a MMORTS where the game environment is nearly identical to a first-person shooter. The "avatar" can equip gear and weapons and attack other players. What makes this much more interesting is that each player owns territory(s) with assets. The player base is divided into four "corporations", each with different items (which are traded or lost to others). Anyone can attack other players of other corporations to expand their personal empire (made up of "camps") and build their own defenses.

Game play in Project Visitor is unique to say the least. All the action takes place on a planet named "Visitor" which has entered our solar system. The four corporations spread themselves across the planet with their camps. Transportation between camps is done by teleportation and specific location on a planet has little strategic value (however, as in real life, there are some cases where a location or camp number may appeal to someone). Camps are destroyed and reclaimed by teams of players, constantly shifting the power between corporations. Once a player builds up his empire, he depends on his "Mutual Defense Network" (MDN) to defend it. An MDN generally consists of (no more than) 20 members of the same corporation who usually play hours that complement one another. With an active MDN, a player can sleep with the satisfaction that his assets are protected by the others online.