Mortigen: Zombie Survival

The Mortigen lab has fallen. The outbreak has reached the city. Keep moving. 100% offline • Zero forced ads • Pure retro action. You are Dr. Luisen, a biochemist who knows the full truth about what Mortigen Biopharma released. Face the horrors inside the annex or take the fight into the devastated city. Everything you need to survive must be taken from the outbreak itself. Mortigen is a top-down zombie survival auto-shooter built around movement, positioning, and the upgrades that shape each run. If you enjoy survivors-like action, bullet heaven builds, and roguelite or roguelike progression, choose your world and see how long you last. Auto-fire combat Move, dodge, and control the space around you while your weapons aim and fire automatically. Touch controls support one-handed movement, while precise positioning separates a narrow escape from a swarm. Forge an outbreak-born arsenal Turn bile, bone, marrow, nerve tissue, and unstable serum residue into field weapons. Fire piercing rounds through packed lines, throw plague grenades at the densest cluster, unleash chain lightning, push enemies back with the Wind Cannon, or melt anything nearby with the Rot Halo. Build elemental synergies Upgrades stack and interact across your projectiles, grenades, Wind Cannon, and Bone Sword. Frost Plague freezes targets. Storm Serum shocks them. Combine both to control crowds, amplify damage, and turn a desperate run into a devastating build. Nidhogg is hunting Subject Zero escaped into the annex long before the outbreak. Nidhogg roams both worlds from the start, but step into his territory and he will hunt. After every horde he survives, he fully heals, gains 15% max health, and becomes more aggressive. Fight him early or face his final phase when the horde is already at its deadliest. Choose your world: Lab or City Select Lab or City before each run. Lab rebuilds the annex with procedural corridors, rooms, hazards, hidden rewards, and breakable equipment. City takes you into the ruined streets of Night City, a fixed map with flooded ground, breakable obstacles, and fresh placements for Nidhogg, the dog, and surviving scientists. In both worlds, enemies unlock as the pressure rises, horde intervals tighten, and bosses interrupt the rhythm of each run. 17 upgrades across 4 rarity tiers Choose from upgrades such as Bile Rounds, Frost Plague, Storm Serum, Plague Grenade, Rot Halo, and the drivable Corpse Crusher. Rare, epic, and legendary upgrades enter future runs as you complete trophy milestones. Rescue the dog Find Argos, your loyal dog, in either world. Rescue him and he fights by your side—biting nearby infected, guarding your back, and helping hold back the horde. In Lab, find him before the Crimson Heart changes you. Built for repeat runs • 11 enemy types, including 7 boss threats • 24 trophies tied to persistent progression • An in-game encyclopedia filled with lore and enemy dossiers • Layered music that intensifies with each horde • A run-changing Crimson Protocol transformation to discover in Lab • Weekly and all-time score leaderboards when connected Play your way • Touch, gamepad, and keyboard controls with automatic priority detection • Responsive portrait and landscape layouts • Localized in 13 languages • Offline runs with progression stored on your device • Anonymous online leaderboards with an optional alias and no account required • One optional rewarded-video revive per run when an ad is available Rewarded video appears only when you choose to revive. The core game has no forced ad breaks. From sealed corridors to ruined streets, the truth is waiting. So are the infected.