In the early 2000s, Nexuiz emerged as a pioneering open-source first-person shooter, built on the principles of community collaboration and digital freedom. Released under the GNU General Public License (GPL), it allowed anyone to access, modify, and distribute its source code, fostering a passionate global community of developers and players. However, in 2010, one of its original creators, Lee Vermeulen, secretly licensed the Nexuiz name and domain to IllFonic, a commercial game studio, to develop a proprietary version for consoles using the CryEngine 3. This move bypassed the community entirely and violated the spirit of the GPL, sparking widespread outrage. Developers and contributors felt betrayed, as their unpaid labor had helped build a project now being monetized without their consent or contribution. In response, a core group of the original team and community members executed a ’fork’—a formal split from the original codebase—launching Xonotic as a direct continuation of Nexuiz’s original vision. Xonotic remained fully open-source under GPLv3+, preserving the community’s control and ensuring that all future contributions would remain free and transparent. The commercial Nexuiz ultimately failed to resonate with the original player base, criticized for abandoning the fast-paced, skill-based gameplay and open ethos that defined the project. Meanwhile, Xonotic evolved into a technically refined, community-driven successor, emphasizing advanced movement mechanics like strafe jumping and rocket-based propulsion, offering 16 weapons with dual firing modes, and supporting diverse game modes such as ’Nexball’ and ’Freeze Tag.’ Despite challenges—such as volunteer turnover, debates over game balance, and tensions between preserving hardcore gameplay and attracting new players—the Xonotic community has sustained development for over a decade. It continues to release updates, improve graphics, and discuss long-term technical overhauls, including potential engine migrations to Godot or Daemon. The story of Xonotic transcends gaming: it exemplifies the power of open-source software to resist corporate co-option, ensure software longevity, and empower users against vendor lock-in. It highlights how community resilience can transform betrayal into innovation, serving as a model for digital autonomy in an era where proprietary control dominates. Xonotic stands not just as a game, but as a living testament to the enduring value of transparency, collective action, and the right to own and shape the technology we use.