Project Hedra is a C# game and custom engine that its developer began around age 15 to learn OpenGL and expanded over several years. It supports Linux and Windows and generates terrain at runtime from saved player data and a world seed rather than a separate world file. The game itself is structured as a mod, with Python scripts accessing the C# API. The repository describes custom allocators and more than 1,000 tests for performance and behavior. Its Steam page also confirms procedural exploration and four character classes; the renewed attention does not mean the game is newly released.