PrBoom

PrBoom is a free and open-source, enhanced port of the classic first-person shooter video game Doom. It was developed to be a more accurate and feature-rich alternative to previous Doom source ports, aiming for closer fidelity to the original game's engine while also introducing modern improvements. PrBoom is based on the original Doom source code released by id Software and further refined by the Boom source port.

Key features of PrBoom include improved compatibility with modern operating systems, enhanced graphics capabilities such as higher resolutions and more color depth, and support for more complex level designs than the original Doom engine could handle. It also offers advanced options for gameplay, including more configurable difficulty levels, network play improvements, and the ability to load custom modifications known as WADs. PrBoom is designed to be highly configurable, allowing players to tailor the experience to their preferences. It remains a popular choice for playing classic Doom and its many fan-made levels due to its accuracy and extensive feature set.