In 2Moons, players control a single character, and move around a three-dimensional world, completing quests and defeating fiends (which may either be monsters, known in 2Moons as the Pitborn, or other players) to gain experience and become more powerful. In terms of player and player interaction, there is also a PVP option, and sometimes a PK (player killing) option outside safety zones.

When creating a character, players select one of six (soon to be seven) classes. Each class offers various benefits and drawbacks, as well as access to different weapons, abilities, and spell trees. Unlike several other MMORPGs, there exist no races; the only character differentiation is through class. Once selected, character classes are permanent.

Upon reaching Level 35, players may buy and use mount tokens, which give the player access to a mount for one day`s time, 15 day`s time, or 30 day`s time. Mounts offer no benefits other than increasing a character`s movement speed by 32%. Players may not use abilities while on a mount, and any buffs that were previously on the player are discontinued when that player mounts. Prices for mounts are described as extremely expensive, particularly given that mounts are rented for one, fifteen, or thirty day durations. In addition, the game`s exportations system provides cheaper and faster transportation (though only between major areas). Acclaim has recently introduced a system whereby mounts may be permanently purchased from the Acclaim Shop for some Acclaim Coins. Additionally, a new feature was added which allows players to obtain and trade 10 Piuma Feathers to an NPC in one area of the game in order to obtain a special mount.

Since the release of 2Moons, Acclaim has issued two major expansions: Bad Moons Rising and Expedition. The Bad Moons Rising Expansion added multiple new areas, dungeons, bosses, quests, skills, and items to the game. Most of these are for higher level players . The second expansion, Expedition, added a new feature to the game, allowing players to form a massive party, or Expedition Force, of 12 through 18 players to launch an attack on Karon`s Transport Ship, an instance dungeon in which there are many new items and monsters, as well as a new boss, to find. Additionally, the new map Cherubim`s Nest was added . The expansion Bad Moons Rising required only a standard start-up update; however, the Expedition expansion required an entire new client download, making the previous non-Expedition client obsolete.

Players in 2moons can team up with others to tackle dungeons and quests.