How to Make an Atomic Bomb in Your Garden Update History

Overview of the Update History

Since its launch on June 9, 2026, How to Make an Atomic Bomb in Your Garden has received several patches aimed at refining the chaotic experience of building a nuclear device in your backyard. This guide compiles every official update, from early hotfixes to major content drops. Whether you're tracking balance changes for rare parts or curious about new events, you'll find the full log here.

The developer, karahan, has been actively listening to the community, pushing updates that address gameplay stability, AI behavior of nosy neighbors, and the availability of critical components. Below, we break down every patch note in chronological order.

Launch Day Patch (June 9, 2026)

The initial release version shipped with the core campaign and basic mechanics. However, a day-one patch was deployed to address early access feedback.

Key Changes:

• Fixed a crash when attempting to purchase the "Uranium-238" blueprint from the black market.
• Adjusted the spawn rate of "Suspicious Packages" to be more frequent in the early game.
• Reduced the detection range of the "FBI Agent" NPC by 15%.
• Improved tutorial prompts for the "Fundraising" mechanic.
• General stability improvements for the garage assembly sequence.

Hotfix v1.0.1 (June 12, 2026)

A quick hotfix targeted several bugs reported within the first three days after launch.

Bug Fixes:

• Resolved an issue where the "Neighbor's Dog" would clip through fences, causing premature alerts.
• Fixed a softlock that occurred when combining "Beryllium Reflector" with "Detonator Cap" in the wrong order.
• Corrected a text error in the "Science Journal" entry for Plutonium-239.
• Improved performance during the "Countdown" sequence to prevent frame drops.

Major Update: "The Neighbor's Revenge" (June 20, 2026)

The first major content update introduced new challenges and quality-of-life features.

New Content:

• Added a new NPC: "The Retired Colonel" – a military veteran who can sell you classified schematics if you gain his trust.
• Introduced three new rare parts: "Military-Grade Wiring," "Shielding Lead Plate," and "Custom Fuse Box."
• New event: "Midnight Raid" – a random encounter where you must hide your progress from a surprise inspection.

Balance Changes:

• Increased the cost of "Centrifuge Rental" from $500 to $750.
• Lowered the success rate of "Smooth Talking" the mailman from 90% to 70%.
• Reduced the cooldown on "Distraction Fireworks" from 5 minutes to 3 minutes.

Bug Fixes:

• Fixed an exploit where players could duplicate parts by reloading the save.
• Addressed a visual glitch in the "Radiation Meter" display.

Patch v1.1.0 (June 28, 2026)

This patch focused on refining the endgame experience and adding more replayability.

Gameplay Updates:

• Added a "Speedrun Mode" timer for players aiming to build the bomb under 2 hours.
• New achievement: "Ghost in the Garden" – complete the game without ever being caught by a neighbor.
• Improved AI pathfinding for "FBI Agent" and "Police Patrol" units.

Performance:

• Optimized memory usage during the final assembly phase.
• Reduced loading times when entering the "Underground Bunker" location.

Bug Fixes:

• Fixed a rare issue where the game would not recognize a completed bomb if you used a "Tungsten Core" instead of a standard one.
• Corrected a localization error in the German version of the "Science Notes."

Quality of Life Update (July 5, 2026)

A smaller update dedicated to improving user interface and accessibility.

UI Improvements:

• Added a "Part Tracker" to the HUD, showing which components you still need to find.
• Implemented a "Recipe Book" that lists all known bomb configurations.
• Improved contrast for the "Suspicion Meter" to make it easier to read in bright environments.

Accessibility:

• Added a "Colorblind Mode" toggle in settings.
• Increased the size of tooltip text.

Bug Fixes:

• Fixed a crash when alt-tabbing during the "Countdown" sequence.
• Resolved an issue where the game would save incorrectly if you quit during a "Neighbor Visit."

How to Check Your Current Game Version

To see which update you are running, launch the game and look at the bottom-right corner of the main menu. The version number is displayed there. You can also verify your files through Steam by right-clicking the game in your library, selecting "Properties," then "Installed Files," and clicking "Verify integrity of game files."

Future Updates and Roadmap

The developer has hinted at a larger expansion titled "The Bigger Bang," which may introduce co-op play and new locations like an abandoned missile silo. No official date has been announced, but we will update this page as soon as new information is available. Stay tuned for more patches that will continue to shape the world of backyard nuclear science.