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Defcon Zero: Frontlines of Tomorrow

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Defcon Zero: Frontlines of Tomorrow screenshot 1
Steam Release Video trailerWatch trailer on Steam ↗

Defcon Zero: Frontlines of Tomorrow

TriArts · Published by TriArts · Official site ↗

Last updated 28 Sept 2026

Defcon Zero is a classic real-time strategy game set on planet Eros, where you dive into the story of ERA, the last beacon of civilization. Build your base, gather resources, engage your enemies and make strategic choices to prevail in combat. Are you ready to command the frontlines of tomorrow?

Free to PlayComing SoonDJCTQ 18

Free

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Strategy · More free games

Explore Defcon Zero: Frontlines of Tomorrow, a real-time strategy experience where you build and defend on Eros. Make strategic decisions to survive against adversaries in a tale of ERA's struggle for survival.

About this game

Defcon Zero: Frontlines of Tomorrow is a real-time strategy game, but not only. It is the opening episode of a hard science‑fiction war saga. The first strike in a campaign carved in death and ash, it drags you into a world where hesitation is annihilation and tomorrow is never guaranteed. On Eros, every transmission is a weapon, every miscalculation costs battalions. This is a real-time strategy for commanders forged in steel, not dreamers. Construct war engines, strip the planet for resources, and unleash legions bred for conflict across a colony world already in ruins.

Created by a team of RTS veterans, the game merges the familiar backbone of the genre with practical modern systems. Combat feels deliberate, with units equipped for multiple roles and guided by a clear weapon priority system to strike with the right tool at the right time. Cover is functional and essential, soldiers survive when positioned behind potential covers, walls, or inside structures. The battlefield itself evolves through a day-night cycle that directly alters vision, detection, and combat efficiency. In Defcon Zero: Frontlines of Tomorrow, strategy is precise and unforgiving.

Eros is no paradise, but it is still a living world, scarred yet breathing, filled with ecosystems, dangers, and the fragile pulse of survival. Once ravaged by cataclysm, its scars run deep, and its soil is steeped and scorched in the bones of the fallen. Rising from the ashes is the Eros Reclamation Agency (ERA), a machine of discipline and technology, its iron fist masquerading as salvation. To ERA, order is survival, and those who resist are nothing but obstacles to be crushed beneath their war engines.

But defiance festers. As ARM calls upon the gods of old Eros, beings older, darker, and hungrier than mankind itself. To their believers, blood is a prayer and sacrifice is the only truth. They march under banners of faith twisted into madness, eager to drown the world in fire in the name of their elder masters.

You are the commander, the executioner, the judge of humanity’s future. You will march with ERA’s steel legions, wielding discipline, precision, and firepower to carve order into chaos. Every battle is a crucible, every choice a blade pressed against the throat of civilization. On Eros, there is no mercy, only victory, or annihilation.

THE FUTURE IS IN YOUR HANDS

BASE BULDING

Deploy The O.M.C. (Operational Mobile Command Center) Build power grids, factories, and defenses with precision. Every structure fuels your war machine, every expansion secures your grip on the battlefield. Classic RTS base building, sharpened into ERA’s vision of control: efficient, unyielding, and relentless.

RESOURCE GATHERING

Deploy MULEs and Haulers as the lifeblood of your war machine. Guard them or lose everything. Supply lines are veins of iron, cut them, and armies rot in the dust. The natives of Eros call the main resource The Black Rock, a metal born from the planet’s wounds. To them it is both blessing and curse: strong enough to forge tools and shelter, yet feared for the way it whispers in silence.

ARMY MANAGEMENT

Dispatch legions of infantry, roll forth armored beasts, send aircraft screaming across the sky, and unleash warships to dominate the seas. Harden them in battle, make them veterans, and turn them into predators that tear through flesh and steel alike. Fight in every front, whether it's land, air or sea, until no battlefield remains beyond your reach.

ASYMMETRICAL FACTIONS

Each takes a unique approach to base building and warfare. ERA relies on heavy armor and air superiority, constructing powerful fortified bases. ARM specializes in guerrilla tactics, covert operations, propaganda, and unconventional weapons, spreading across the land and using the environment and local population to its advantage.

CLASSIC CINEMATICS CUT SCENES

Relive the thrill of commanding from the war room, where every briefing feels urgent and every order carries weight. Cinematic cutscenes put you face-to-face with leaders, soldiers, and enemies, drawing you into struggles and ambitions. This isn’t just spectacle, it’s the pulse of the campaign. With cutting edge visuals and full cinematic dialogue, the spirit of classic RTS storytelling returns.

WEAPON PRIORITY SYSTEM

War is never simple. Your units wield multiple weapons and know when to strike with the right bullet, the right shell, the right missile. Anti-armor, anti-air, suppression, let them fight like seasoned killers.

AUTOMATED INFANTRY COVER SYSTEM

The battlefield itself becomes your shield or your grave. Troops crawl behind rubble, ambush from ruins, and bleed for every inch of ground. Position is everything, and missteps are fatal.

INTERACTIVE WORLD

Every action carries consequence. A single misfire or a careless push can cost lives. On Eros, hesitation is annihilation, and the battlefield remembers. Beyond the war, the planet itself turns against you. Wildlife defends its territory with lethal ferocity, while the darkness hides predators no sensor can fully reveal. When night falls, fear rises, and every shadow conceals a threat. On Eros, you fight a world that, refuses to be conquered.

BREATHTAKING VISUALS

Built in Unreal Engine 5, the game shows clear and detailed battlefields. Explosions light up the map with Lumen technology, and every fight is easy to follow. Maps are created with procedural tools, and cinematic cutscenes explain the story in a direct way.

DAY & NIGHT DYNAMICS

Experience dynamic day-night cycles in Defcon Zero, where every moment matters. As the sun sets, new challenges arise and opportunities unfold. Adapt your strategies to the changing environment, as day brings vitality and night harbors danger. Embrace the cycle, for each choice shapes your fate.

ORIGINAL SOUNDTRACK

A mix of heavy metal, orchestral, and electronic music. Tracks are designed to keep battles intense and to set the tone between missions.

DEEP LORE

Defcon Zero: Frontlines of Tomorrow begins a larger story. The game introduces factions, conflicts, and high threats that will continue to grow in the Defcon Zero universe.

  • Campaign - Play through 30 missions with ERA and experience the full story of the first game. Meet the main heroes and face deadly enemies across different biomes. The campaign delivers a deep storyline and powerful gameplay that prepares you for the challenges of Skirmish mode.

  • Skirmish - Test yourself against relentless AI. From brutal 1v1 duels to chaotic 4v4 bloodbaths, craft your battlefield and prove your dominance.

  • Tower Defense - Hold the line against swarms that do not break, that do not tire, that exist only to consume. Your defenses will crack. The question is, how long can you make them bleed before they tear you apart?

  • Editor & UGC Tools - Forge your own war. Create maps, scenarios, and missions that echo with your design. Share them, and let others fight on the killing fields you’ve built.

System Requirements

Will my PC run this? →

Minimum

Minimum:
  • OS: Windows 10 64-bit
  • Processor: To Be Announced
  • Graphics: To Be Announced

Recommended

Recommended:
  • OS: Windows 10 64-bit
  • Processor: To Be Announced
  • Graphics: To Be Announced

Supported Languages

English*, French, Italian, German, Spanish - Spain, Arabic, Japanese, Korean, Polish, Portuguese - Brazil, Portuguese - Portugal, Russian, Simplified Chinese, Traditional Chinese, Turkish
*languages with full audio support

Latest news

  • AnnouncementsOfficial

    The rosters are getting bigger!

    The rosters are getting bigger, with each faction bringing its own unique design, ERA & ARM.What do you think of the factions so far? *This is a work in progress picture, no textures, captured from Maya*
    Read full article on Community Announcements (Levelim)
  • AnnouncementsOfficial

    First look: Aviation Command

    Read full article on Community Announcements (Levelim)
  • AnnouncementsOfficial

    25,000 Wishlists for Defcon Zero: Frontlines of Tomorrow

    25,000 Wishlists for Defcon Zero: Frontlines of Tomorrow We’re a little late sharing this one.We actually reached 25,000 wishlists on Steam last week, but we’ve been so deeply focused on development that we completely forgot to stop and celebrate.And honestly, that might be the best reason to be late.25,000 people have now said, “I want to play this”, and that means an incredible amount to our entire team.What started as an idea has grown into a real game, a real world, and a growing community around it. Seeing more and more people take an interest in what we’re building is incredibly exciting.25,000 is a huge milestone for us, but we truly believe this is just the beginning.There is still so much to build, improve, reveal and share.To everyone who has wishlisted Defcon Zero, followed our development, shared our content, joined our community, given us feedback, or simply supported us along the way, thank you.We’re incredibly grateful to have you with us on this journey.Now, back to work.We’re just getting started. From Ashes To Glory!
    Read full article on Community Announcements (Levelim)
  • AnnouncementsOfficial

    Something's coming next month. Here's a peek. Work in progress.

    We are working on something for next month... hope you like it :)
    Read full article on Community Announcements (Levelim)
  • AnnouncementsOfficial

    ERA Unit | The Ghost

    Read full article on Community Announcements (Levelim)

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