MMO 
ArcheAge is a free-to-play sandbox style MMORPG. Join with allies and build farms, houses, cities, and castles to claim land; fight for fame in land, sea, and air battles; and choose your alliances or work as a lone agent in a vast world.
A paid version is also available, called ArcheAge Unchained.
Business Model: Free to Play
Microtransactions: Yes - Players may buy mounts, in game currency (credits), and Patron subscription which imbues various bonuses, including the ability to own property.
Key Features:
Races: Nuians (Humans), Elves, Dwarves, Firran (Cat people), Harani (Humans), Warborn
Classes: There are 10 Skillsets available, of which any character may have 3 equipped at a given time. These combinations create the classes in the game, of which there are 120. You can see the full list of classes here. The skillsets are: Songcraft, Witchcraft, Auramancy, Defense, Shadowplay, Occultism, Vitalism, Archery, Sorcery and Battlerage.
Expansive PvP: Rule an empire, craft mighty siege engines, and wage war endlessly in these great open lands. Battles may take place on the ground, on the sea in naval combat, or even in the air.
Player-Driven Economics: Gather, craft, trade, transport, and more as you supply mighty war efforts, pirates, and entrepeneurs.
Your Own Brand of Justice: Theft, murder, piracy, and other crimes occur in the world - but the players are also judge and jury.
