The game formerly known as Operation Flashpoint is getting a remaster and a source code release

Arma: Cold War Assault gets the GitHub treatment.
The Escapist

Hytale releases server source code and assets in Shared Source Programme

Hypixel published a new community programme sharing Hytale's Server Source Code, with select community members and modders.
GitHub

If you are an Android Studio programmer, there are several ways to download this repo. Note that if you use the Blocks or OnBot Java Tool to program your robot, then you do not ...

Or, if you prefer, you can use the "Download Zip" button available through the main repository page. Downloading the project as a .ZIP file will keep the size of the ...
GitHub

The Ludii General Game System

Ludii is a general game system being developed as part of the ERC-funded Digital Ludeme Project (DLP). This repository hosts the publicly available source code for Ludii. A precompiled build ...