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Last Fuse

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Last Fuse

YYZ Studio · Published by YYZ Studio · Official site ↗

Last updated 28 Sept 2026

A tower defense with a twist - you’re defending a nuclear bomb. It powers your defenses, but the more you use it, the closer you get to meltdown. Manage chaotic engineers, scarce resources and risky upgrades - every decision counts.

Free to PlayComing SoonDJCTQ 10

Free

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Indie, Strategy · More free games

In Last Fuse, direct chaotic engineers and manage scarce resources to defend a nuclear bomb that powers your defenses but brings you closer to disaster. Every decision shapes the outcome in this tense indie strategy game.

About this game

In Last Fuse, your greatest weapon is also your greatest threat. Build a nuclear bomb in the heart of a city, using its energy to power defenses against relentless alien attacks. But tapping into its power pushes it closer to meltdown. Manage crazy engineers, balance scarce resources, and push the limits with risky upgrades like bomb overdrive. Research alien tech, make high-stakes decisions, and fight to survive the chaos.

The Bomb: Your Power and Your Doom

The bomb is your greatest asset, but also your greatest threat. It generates energy to power your defenses, but the more you use it, the hotter it gets. Manage its heat carefully, or you’ll push it to meltdown.

Overclock your bomb for more energy, take bigger risks, and power up your defenses - but let the heat max out, and your city won’t be standing for long.

Defend Against Relentless Alien Attacks

They’re coming. They won’t stop. Set up turrets, upgrade your defenses, and hold the line - all while keeping your bomb from turning your city into a crater.

Build the Bomb, Gather Resources, Stay Alive.

Steel, titanium, coolant...every resource counts. Manage your economy, balance construction speed with energy needs, and prepare for the inevitable.

Harness alien technology for upgrades.

Research permanent upgrades that make each subsequent run easier.

Choose Your Bomb, Choose Your Fate

From the icy Frostcore to the volatile Overdrive Reactor, each bomb comes with unique perks and challenges. Will you harness controlled power or risk total meltdown for greater rewards?

Dynamic weather

Blinding storms, eerie nights, scorching heat...weather isn’t just for show. It affects visibility, energy production, and even your defenses. Adapt or perish.

System Requirements

Will my PC run this? →

Minimum

Minimum:
  • Requires a 64-bit processor and operating system
  • OS *: Windows 8 (64-bit)
  • Processor: Dual core 3 GHz+
  • Memory: 4 GB RAM
  • DirectX: Version 11
  • Storage: 1 GB available space

Recommended

Recommended:
  • Requires a 64-bit processor and operating system
  • OS: Windows 10 (64-bit)
  • Processor: Dual core 3 GHz+
  • Memory: 8 GB RAM
  • DirectX: Version 11
  • Storage: 1 GB available space

Supported Languages

English*, French, German, Spanish - Spain, Japanese, Korean, Portuguese - Brazil, Russian, Simplified Chinese, Thai, Traditional Chinese
*languages with full audio support

Latest news

  • AnnouncementsOfficial

    v0.23.0 - Spires

    v0.23.0 is released!SpiresIn a previous update, the game introduced Spires. I've made improvements to Spires to speed up your gameplay, along with several fixes.I got feedback that the heat tutorial was annoying, so it now no longer triggers after wave 5.Full changelog below!Provocation spire spawn boost decreased: 50% -> 25%Combat modules now increase turret attack speedSkull tooltip now says wave number and correctly shows Expected enemy countHeat bar tutorial no longer appears after wave 5Fix Provocation Spires not increasing spawn rateFix Overdrive Construction perk not increasing crane speedFix spires having module slotsCredits to @Papelinho for reporting these issues!In the next update I will add additional text to show total population, as food consumption is based on total population rather than idle population, and the current population text is misleading.The game will continue to be balanced so do continue to leave me feedback - I read them, even if I might not respond to every single one!Website: https://yyzstudio.com
    Read full article on Community Announcements (YYZ Studio)
  • AnnouncementsOfficial

    v0.22.0 - Underwater Dome!

    v0.22.0 is released!New building: Underwater DomeThe underwater dome has been added! You can now produce your own Alien Artifacts!More Abyssite and Etherium patches!Abyssite and etherium patches can now spawn when expanding with underwater submarines!You are no longer restricted to the initial default patches!Islands Sneak PeekIn the full version, islands have been added! I will share more about these in an upcoming post. Meanwhile, there is a preview of the three new islands in the game:The Forest, The Desert, and The Alien Ruins.Below is the full changelog:New contentAdd new underwater Dome BuildingNewly discovered underwater grids have a 1% chance to spawn a new abyssite or etherium patchChange mountain island to green instead of blackFull version contentIslands now spawn every 10 waves in endless modeQuality of LifeAdd 'Perks' button to view perks in-game via ESC menuFixesFix Alien Ruins not spawningFix Xenora plant showing +0.00% drop rateFix able to build land buildings underwaterFix population not reducing when deleting housesFix able to upgrade/equip perks during a runFix islands spawning infinitelyFix negative mothership HPFix Perks not applyingFix Biolabs unbuildableThis game is constantly being updated. Let me know your feedback here or on Discord!-YYZ
    Read full article on Community Announcements (YYZ Studio)
  • AnnouncementsOfficial

    v0.21.0 - Mothership Debris, Faraday's Turret

    v0.21.0 is released!The mothership will now drop 'Debris', allowing you to construct the final bomb.The conditions to finish the game have been reduced for the demo. The game is balanced for the full version, but because content like islands and perks are restricted in the demo, it was not easy to acquire Cores and Artifacts, so the final bomb's build requirements have been lowered.The Faraday's turret's bullet VFX have been improved.Accurate notifications have been added when you damage the mothership.BiolabThe biolab is now cheaper and costs meat instead.Islands PlaytestI have opened a private playtest for a small minority of dedicated players, and also made improvements to the full version. When destroying obstacles on islands, you can now get additional build space!Plenty of balance changes have been made, thanks to all your feedback!Full changelog below:v0.21.0:Add new item: Mothership Debris and eventBiolab now costs raw meat to build, decreased its build cost: 20 -> 4Improve faraday turret bullet visual appearanceLast Fuse bomb artifact cost temporarily decreased: 50 -> 20Optimized bullet renderingFix Mothership Debris not awarded properlyFix wrong damage displayed on bomb detonate notificationFix tutorial re-appearing when "Don't show again" was ticked\Increase core to artifact exchange at Alien Ruins: 5 -> 6Fix right clicking on Ruin Island opening event popupFix islands HP not savingFix unable to build on islands after destroying its obstaclesPlease continue to leave me your feedback if you get to play! :)-YYZ
    Read full article on Community Announcements (YYZ Studio)
  • AnnouncementsOfficial

    Mothership Shield

    The mothership shield update was released a bit ago in v0.18.0, but I forgot to push the patch notes so here it is!The mothership now deploys a shield at 1 HP, and can only be destroyed by The Last Fuse, the final bomb tier that will arrive in the Islands Update. A few improvements have been made to the underwater biome. Full changelog: Add dive button on Nautilus Add return to land button when underwater Mothership now shields itself at 1 HP and is only destroyable via Last Fuse Fix cores and artifacts showing as consumable item Fix being able to damage enraged mothership without Last Fuse Fix negative mothership HP Feel free to let me know if you have any suggestions.
    Read full article on Community Announcements (YYZ Studio)
  • AnnouncementsOfficial

    v0.20.1 - Nautilus improvement + Fixes

    Hi all,v0.20.1 has been released!I received feedback that the Nautilus was hard to unlock - as it is a key building for progression, unlocking the underwater region, fishing huts and Biolab, I decided to make the Nautilus card appear as the first building card to unlock, and also appear at 100% chance when you launch a bomb, if it hasn't been unlocked.I also fixed the game crashing when the bomb is launched. Sorry for the trouble!Full changelog:Nautilus building card appears at 100% chanceFix overdrive decreasing build speedFix crash when launching a bombLet me know if you face any issues or have anything you want to see!-YYZ
    Read full article on Community Announcements (YYZ Studio)

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