CORUM ONLINE is a free-to-play massively multiplayer online role playing game (MMORPG) in which you choose a character class of your liking and, without very much guidance, venture forth into the online world that has been created. While a very simple premise, the sheer amount of hotkeys combined with the ability to go almost anywhere and do almost anything make the game seem a little overwhelming. In order to advance the story, you must find someone in the cities who has an errand for you to run, which could be anything from collecting treasures from fallen enemies to finding an item from a shop in a far away city. In addition to the fetch quests, player vs. player (PvP) fighting is encouraged in the game. But instead of randomly attacking people or being attacked, you select who you'd like to fight with and then are warped to a special arena where the PvP battle takes place.
The game is divided into cities, an overworld, and, for lack of a better term, dungeons. In the latter, you fight enemies of various skill levels, and earn experience points to level up your chosen character. Fighting is extremely simple initially, but can become more complicated as you unlock more spells and enchantments. Simply left-clicking on a creature when a sword icon appears on them is all that is necessary to engage in combat, while a right click will perform a spell or another special attack, depending on how the controls have been configured. Moving your character is also tied to the computer mouse via simple point and click, or even clicking and holding the button down while moving the mouse will work.