Zombie Forest 3: Underground features low-poly graphics in a survival action environment devastated by a zombie virus. Players guide the protagonist, who miraculously discovers a fortified basement stocked with supplies in a forest hut. This hidden refuge provides a glimmer of hope for survival amid the chaos. Players must navigate various missions, make critical decisions, and strategically prioritize challenges to secure the character's future, emphasizing the importance of caution and wise planning throughout the perilous journey.