Overview
Aion (full title: Aion: The Tower of Eternity) is a massively multiplayer online role-playing game developed by South Korean studio NCSoft and launched in November 2008 in Korea. The international release followed in September 2009. The game stands out for its PvPvE concept — a three-way conflict between two playable factions and the NPC Balaur race — and for aerial combat in a unique zone called the Abyss.
History & Development
Aion was announced by NCSoft in 2006 and positioned as the next-generation MMORPG from the makers of Lineage 2. It was built on CryEngine, which gave it impressive launch-era visuals: detailed characters, scenic landscapes and flashy skill effects.
The Korean launch in November 2008 was a commercial hit — registered accounts passed 3.5 million within the first six months. The international version, released in September 2009, also drew a large audience. In Europe, Gameforge handled publishing.
Aion originally ran on a subscription model, but in 2012 it moved to free-to-play as Aion: Free-to-Play in North America and Aion: Free-to-Play (Truly Free) in Europe. In 2021 NCSoft launched Aion Classic — a version that recreates the gameplay of the early updates with a subscription model, aimed at returning veterans.
Gameplay
Aion offers progression that is familiar for the genre: pick a class, level up through quests and grinding, and upgrade your gear. At character creation you choose one of two factions — Elyos or Asmodians — which sets your starting zone and your allies. There is no switching sides later.
The class system uses base archetypes (warrior, mage, priest, scout) that specialize into concrete classes at level 10. There are more than ten classes in total, each with a unique skill set and group role. Combat blends targeted attacks with skill chains that reward well-timed inputs.
PvE content includes the open world, plenty of instances (dungeons) for parties of various sizes, and world bosses. The crafting system lets you make gear, potions and consumables. The economy runs on player trading through the auction house and personal stores.
The Abyss & PvPvE
The Abyss is Aion's central zone and the heart of its PvPvE design. It is a vast space between Elyos and Asmodian territory where both factions clash with each other and with the NPC Balaur race. The Abyss is a three-dimensional space with upper, middle and lower layers, which makes full use of the flight mechanic.
Flight in Aion is time-limited and only available in certain zones, mostly the Abyss. Your character's wings let you take to the air for a limited time, after which you glide back down. This creates tactical depth: managing flight time, choosing your combat altitude and using the terrain all become important skills.
Fortresses in the Abyss are the focus of mass PvP: factions fight to control them, unlocking access to unique vendors, instances and resources. Fortress sieges run on a schedule and pull in hundreds of players from both sides. The Abyss Rank system tracks PvP achievements and gates access to elite gear.
Criticism
The main complaint about Aion is repetitive endgame content. After hitting max level, the gameplay loop boils down to running the same instances every day to chase gear. Updates add new dungeons, but the formula stays the same, which leads to fast burnout.
The monetization model evolved in a negative direction. After the move to free-to-play, the in-game store gradually filled with items that affect combat effectiveness. Selling enchant stones, unique transformations and progression boosters tilted the balance toward paying players, especially in PvP.
Population decline has been a problem for Aion in recent years. Server merges happened repeatedly but could not stop the player drain. The long login queues of the launch months gave way to half-empty servers, which hurts the PvPvE content that depends on mass participation.
The gear progression system draws its own criticism for being luck-based: enchanting an item has a failure chance, and on failure the item can be destroyed. This mechanic is widely seen as an artificial slowdown and a nudge toward store purchases.
Aion vs Other MMORPGs
Aion is often compared to Lineage 2 as a product of the same studio, NCSoft. Where Lineage 2 leans on the open world and clan sieges, Aion focuses on instanced PvE and faction PvP. Perfect World offers similar flight mechanics but implements them more freely — with no time limit. ArcheAge beats Aion on sandbox variety but falls short on instanced content quality. Ragnarok Online takes a completely different approach to the genre, with 2D graphics and a focus on social interaction.
Aion 2 — The Sequel
In November 2025, NCSoft released Aion 2 — a cross-platform (PC and mobile) sequel built on Unreal Engine 5. A global release with Russian-language support is planned for September 2026, but there are no official servers for Russia and the CIS yet. For a detailed breakdown of access from Russia, see Aion 2 in Russia: release date and how to play.