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# rAthena [](https://travis-ci.org/rathena/rathena) [](https://ci.appveyor.com/project/rAthenaAPI/rathena/branch/master) [](https://lgtm.com/projects/g/rathena/rathena/alerts/) [](https://lgtm.com/projects/g/rathena/rathena/context:cpp)   > rAthena is a collaborative software development project revolving around the creation of a robust massively multiplayer online role playing game (MMORPG) server package. Written in C, the program is very versatile and provides NPCs, warps and modifications. The project is jointly managed by a group of volunteers located around the world as well as a tremendous community providing QA and support. rAthena is a continuation of the eAthena project.

Forum	Discord	Wiki	FluxCP	Crowdfunding	Fork and Pull Request Q&A

Table of Contents

1. Prerequisites
2. Installation
3. Troubleshooting
4. More Documentation
5. How to Contribute
6. License

1. Prerequisites

Before installing rAthena there are certain tools and applications you will need which differs between the varying operating systems available.

Hardware

Hardware Type	Minimum	Recommended
CPU	1 Core	2 Cores
RAM	1 GB	2 GB
Disk Space	300 MB	500 MB

Operating System & Preferred Compiler

Operating System	Compiler
Linux	gcc-5 or newer / Make
Windows	MS Visual Studio 2013, 2015, 2017

Required Applications

Application	Name
Database	MySQL 5 or newer / MariaDB 5 or newer
Git	Windows / Linux

Optional Applications

Application	Name
Database	MySQL Workbench 5 or newer

2. Installation

Full Installation Instructions

• Windows
• CentOS
• Debian
• FreeBSD

3. Troubleshooting

If you're having problems with starting your server, the first thing you should do is check what's happening on your consoles. More often that not, all support issues can be solved simply by looking at the error messages given. Check out the wiki or forums if you need more support on troubleshooting.

4. More Documentation

rAthena has a large collection of help files and sample NPC scripts located in the /doc/ directory. These include detailed explanations of NPC script commands, atcommands (@), group permissions, item bonuses, and packet structures, among many other topics. We recommend that all users take the time to look over this directory before asking for assistance elsewhere.

5. How to Contribute

Details on how to contribute to rAthena can be found in CONTRIBUTING.md!

6. License

Copyright (c) rAthena Development Team - Licensed under GNU General Public License v3.0