In a world ravaged by "The Mad Virus," society has crumbled, leaving empty cities haunted by shadows and echoing with the shuffling of the infected. Yet, amidst the desolation, a few tenacious survivors remain. Embark on a thrilling journey in this post-apocalyptic landscape, where rebuilding society begins with securing each safe zone. Scavenge for vital resources amidst crumbling buildings and overgrown streets, adapt existing structures to meet your community's desperate needs, and establish robust defenses against relentless infected hordes that claw at your gates each night.

At its core, the gameplay emphasizes strategic urban survival, allowing you to select any real-world location via OpenStreetMap data and transform familiar landscapes into strategic outposts. Players establish and meticulously manage their bases, construct vital facilities, and fortify their defenses against the encroaching darkness. As the leader, you will lead groups of survivors, make critical decisions each night under the crimson glow of the ruined cityscape, and arm yourself with every available tool to combat the infected. Knowledge is your greatest asset in this fallen world: understand your city's layout to turn the once-familiar into something strategic.

Face not only the infected but also other scavenging groups of survivors in tense, high-stakes conflicts, turning every encounter to a life or death situation. Some groups are willing to extend a hand and open trade, their flickering campfires signaling potential alliances. Others are hostile raiders, preying on the weak and unwilling to leave you in peace, pillaging your resources, and forcing desperate battles. You can research a vaccine or a cure for ultimate victory, a beacon of hope in a world shrouded by despair, or simply focus on rebuilding entire cities! Are you ready to plunge into this thrilling adventure? Step into the strategic realm of Infection Free Zone, a city-survival adventure defined by meticulous defense and base management, where each decision shapes the destiny of your haven and the ever-present tension grips your senses.