Why MMOs in particular
Most MMORPGs are patched constantly, and the old versions simply stop existing once the publisher moves on. That is the core reason MMO private servers are so common: players who liked a specific era have no official way back to it. Wikipedia lists World of Warcraft, RuneScape and MapleStory as typical examples of games with large private server scenes.
This page is an overview of the MMO scene as a whole. For the basics of the term, read our comparison of private and official servers; for a particular game, jump to its hub, such as Ragnarok Online, MU Online or Lineage 2.
Nostalrius is the best-known case. It ran Patch 1.12 of World of Warcraft, reached over 800,000 registered accounts, and closed on 10 April 2016 after a cease and desist letter. A petition for official legacy servers gathered more than 280,000 signatures, and Blizzard announced WoW Classic in November 2017. Not every scene gets that outcome, which is why we recommend treating any single server as temporary.
“developing a server software that is able to emulate a well known MMORPG service”
The era problem: what 'version' means
In MMO circles a version is a snapshot of content: the level cap, classes, maps and rules at a moment in the game's life. Private servers pick one snapshot and freeze it, or advance it slowly. The table shows how this plays out in a few games, using dates from each game's Wikipedia page.
| Game | Milestone | Date | Hub |
|---|---|---|---|
| MU Online | Season 6 Part 1 begins (Korea) | 7 Oct 2010 | MU Online |
| Ragnarok Online | Renewal overhaul on official servers | 2010 | Ragnarok |
| MapleStory | Big Bang revision (Korea) | Jul 2010 | MapleStory |
| Lineage II | Interlude released in Korea | 13 Dec 2006 | Lineage 2 |
| Aion | 4.0 Dark Betrayal raises cap to 65 | 26 Jun 2013 | Aion |
| Silkroad Online | Legend IV adds 10th degree gear | Mar 2009 | Silkroad |
| World of Warcraft | Wrath of the Lich King released | 13 Nov 2008 | WoW |
Pre-Renewal Ragnarok, Season 6 MU, v83 MapleStory and Interlude Lineage 2 are among the most requested snapshots. Our segment pages group servers by exactly these versions: MU Season 6, MapleStory v83 and WoW Wrath.
What runs underneath
Different MMOs have different emulator families, and knowing which one a server uses tells you about its likely stability and update path. The projects below are documented on their own repositories.
| Game | Common server software | Source |
|---|---|---|
| World of Warcraft | MaNGOS (Vanilla to Mists of Pandaria branches), TrinityCore, AzerothCore, CMaNGOS | GitHub pages |
| Ragnarok Online | rAthena (C++, GPL-3.0, MySQL/MariaDB) | rAthena README |
| osu! | bancho.py (Python, MIT) | GitHub |
| Travian | TravianZ, an open-source T3.6 clone (PHP) | GitHub |
| MU, Silkroad, Metin2, Aion | Mostly custom or leaked server files, rarely open source | Varies by server |
CMaNGOS, the Classic fork, states it is not affiliated with Blizzard. Because the code is open, many WoW servers can start from the same base and differ mainly in their database content and custom scripts, which is why two 'Wrath' servers can feel quite different.
The settings that separate one server from another
Once you have a version, rates and rules are the main differences. Experience, drop and adena or zen multipliers define the pace; reset systems, seasons and wipes define whether your progress lasts. Examples from servers we researched show the spread.
| Server | Game | Notable setting |
|---|---|---|
| Dragon MU Online | MU Online | Season 21 Part 2-3, x9999 experience |
| MU Pangaea | MU Online | x10 experience, 90 percent zen drop |
| ForcePlay x25 | Lineage 2 | Interlude, x25 experience, running since 2019 without wipes |
| Forever Lineage | Lineage 2 | Season reset lowered rates from x75 to x25 XP and SP |
| Nappy2 | Metin2 | Launch on 5 June 2026 with a vote reward of 1,000 DR per day |
| Ashmarch | RuneScape | States free to play with no pay-to-win |
The rates guide explains what the multipliers mean in play, and the wipes guide explains resets and seasons. High-rate servers suit short sessions; low-rate servers suit players who want the original grind.
Seasonal, permanent and merged worlds
MMO private servers also differ in how they treat time. Some are permanent: ForcePlay says its x25 Lineage 2 server has run since 2019 without wipes, and EpicMU states four to five years online with no wipes. Others run on a calendar. Project Diablo 2 resets its ladder roughly every six months, and Conquer Online's Void Conquer ran a season on which all gear was equalised to plus 8.
| Model | How it works | Good for | Risk |
|---|---|---|---|
| Permanent | Characters and economy carry on indefinitely | Long-term builders and collectors | Late joiners face a huge gap |
| Seasonal | Periodic resets bring everyone back to the start | Competitive players, fresh starts | Effort does not carry over |
| Merge-based | Event servers later merge into a main world | Short bursts followed by a lasting home | Merge dates can slip |
Metin2's Astrallia event realm, for instance, opened on 2 October 2026 with a stated merge into Stellaria on 1 December 2026. Dates like these come from each server's own announcements, so confirm them before you commit time. See Conquer Online, Diablo 2 and Metin2 for current examples.
Language and regional scenes
The MMO private server scene is international, and many strong servers are not English-first. Aion GGWP lists its site in Russian, Ukrainian, English, Chinese and Korean, UWoW's interface is Russian first, and L2MAD offers English, Ukrainian, Portuguese and Russian. Filter by language on each hub before judging how active a game is, because a quiet English scene may sit next to a large one in another language.
How to size up an MMO server quickly
- 1
- 2
Read the rates and caps
Compare them with the official numbers for that version.
- 3
Find the wipe policy
Is it permanent, seasonal or merge-based?
- 4
Check the shop
What does donating sell? Cosmetics, or power?
- 5
Look at population and age
A live player count and a visible history beat promises.
Healthy signs vs warning signs
Healthy signs
- Named version and published rates
- Visible rules and a staffed Discord
- Regular patch notes
- Written wipe or reset policy
Warning signs
- Only screenshots, no version
- Shop sells the strongest items
- Constant 'grand opening' relaunches
- Anonymous staff, no terms or privacy page
Our selection guide goes deeper, the safety guide covers downloads, and the glossary defines each term used here. This page does not give legal advice; publishers' terms vary and many forbid unofficial servers.