RNR

RNR (RNR's Not Roblox) is a project that aims to recreate the look and feel of classic Roblox with new features while remaining fully compatible with clients from that era. It is built upon an engine that closely resembles Roblox's own at the time, referencing disassemblies of legacy client binaries.

Interested in contributing? Feel free to make a pull request!

Goals

There are several goals that RNR seeks to accomplish, them being;

• Full native x64 support on Windows and Linux
• Easy-to-use (simple CLI options to launch and host games, as well as a level editor with a modern UI)
• Fully compatible with Roblox versions up to 0.3.744.0 (dated April 2008) in areas such as hosting, joining, levels, etc.
• Incorporates all the various facets of the Roblox engine, plus a little bit extra (e.g. a network replication whitelist, fancy shader support, etc.)
• Made using clean-room reverse engineering
• Uses Roblox's Luau as its scripting language while remaining fully compatible with classic Roblox scripts written using Lua 5.1
• As free and open-source as possible (with client code licensed under the GPL and the engine itself being released into the public domain, void of any copyright)
• Patching all the security vulnerabilities and fixing bugs/inefficiencies that legacy Roblox clients had

Building

RNR uses CMake as its build system and GCC as its compiler. To build RNR, you must first have the following packages installed:

• Boost
• OGRE
• pugixml
• Qt 6 (if building the player or studio projects)

For Windows:

• If you're building for Windows, MinGW-w64 is the preferred toolset of choice.
• If you're building on Windows, you may use a platform such as MSYS2, which provides an all-in-one environment for running MinGW or GCC.

Additionally, you must also acquire the content folder of the Roblox client you would like to use its resources from and place it in the root of the repository. Proprietary Roblox assets are not included with RNR.

Finally, you may run cmake --build . in the path of the folder you've cloned the repository to so that you may configure and then finally build RNR.

License

RNR is licensed under two separate licenses:

• All of RNR, with the sole exception of the engine, is licensed under the GNU General Public License v3.0.
• The RNR engine itself is licensed under the Creative Commons Zero v1.0 Universal license.

Copies of both licenses have been bundled with RNR.

RNR uses the Luau language and code, developed by Roblox Corporation. Luau is copyright (c) 2019-2022 Roblox Corporation and copyright (c) 1994–2019 Lua.org, PUC-Rio.

This repository hosts no proprietary Roblox assets. RNR is not associated with Roblox Corporation in any way, shape, or form.