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Gun Up CD Key

Zombie outbreak in New Horseon. Survive endless waves using 20+ weapons with an infinite weapon-mixing system. Switch maps, confront varied enemies, and uncover Easter Eggs. Customize loadouts, adapt to changing environments. Co-op coming; ongoing updates with more maps, bosses, and content.
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Current Lowest Price

3.99$
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Release Date

09 Jan, 2026

Publisher/Developer

Horsepower Interactive

Reviews

Steam: 100.00% positive (1/1)
Metacritic: -

Gun Up Steam Price History Chart

Current Steam price: 3.99$
Lowest Steam price ever: 2.79$ — 2026-10-08
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Gun Up description

Gun Up

A zombie outbreak has overrun the city of New Horseon, where ruined skyscrapers loom over flickering neon signs and streets run with danger. In Gun Up, you wield improvised and experimental weaponry to survive, fighting through a city that never forgives mistakes. The goal is simple yet brutal: endure as many waves as possible while the undead press in from every alley and rooftop. Each run tests your nerve, ammo management, and your ability to read shifting battlefield conditions that swing the balance of power in an instant.

Over 20 Unique Weapons: From brutal melee tools and precise rifles to explosive grenades and strange experimental devices, every weapon has its own character. Recoil, rate of fire, blast radius, and reload quirks shape how you use them. Mastery comes from learning timing, range, and synergy, so you can pair tools to hunt down crowds, break through barricades, and survive moments when the clock is against you.

Infinite Weapon Mixing: The system invites relentless experimentation. Fuse two weapons to spark a powerful, or completely unpredictable, new gun. The result can turn a hopeless lull into a decisive push, or trap you with an unforeseen trade-off. Each combination reshapes your playstyle, forcing you to adapt to the evolving waves and the map you’re on.

Varied Maps and Environments: Switch between multiple maps with more on the way. Each map offers distinct layouts, chokepoints, and open arenas that demand different tactics. Dynamic lighting and environmental conditions—such as shifting shadows, fog, and weather—alter visibility and mood, pushing you to adjust pacing and approach as night falls or storms roll through the city.

Varied Enemies and Easter Eggs: Encounter a spectrum of undead and mutant foes that require flexible strategies. Some rush in, others use cover or special abilities, and many reward clever timing. Hidden Easter Eggs scattered across the maps reward curiosity with surprises and secrets to uncover, making exploration worthwhile even as danger closes in.

Customizable Playstyle and Co-op: Build your strategy by choosing a loadout and evolving it through weapon combinations. The game rewards experimentation and flexible planning, letting you adapt to each wave’s rhythm. Co-op is coming in future updates, letting you team up with friends to push deeper into the outbreak and share the load.

Updates and Ongoing Content: Gun Up aims to stay fresh with ongoing updates, including +3 more maps, additional enemy varieties, boss enemies, and more Easter Eggs. New features will expand risk and reward, ensuring no two runs feel the same and every session tests new tactics and nerve.

If you crave fast-paced, strategic shooting against a zombie tide, Gun Up offers a relentless test of skill and ingenuity.