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Steam app 3700980 · updated 12 Sep 2026, 21:14 UTC

How to Make an Atomic Bomb in Your Garden

An absurd backyard bomb-building simulator. Raise funds, plan your approach, hunt down rare parts, and assemble your atomic masterpiece while staying calm and avoiding suspicion from nosy neighbors and federal agents.

How to Make an Atomic Bomb in Your Garden Steam header artwork
karahankarahan
28playing now
4524-hour peak
411all-time peak
17average, last 30 days

The last 30 days

−5.2Gain−22.99%% gain45Peak

448 hourly samples, with the daily peak drawn over them. Weekends are shaded.

01224364913 Aug18 Aug23 Aug28 Aug02 Sep07 Sep12 SepThursday 13 August 202621 peakFriday 14 August 202626 peakSaturday 15 August 202642 peakSunday 16 August 202641 peakMonday 17 August 202632 peakTuesday 18 August 202622 peakWednesday 19 August 202625 peakThursday 20 August 202623 peakFriday 21 August 202622 peakSaturday 22 August 202626 peakSunday 23 August 202630 peakMonday 24 August 202619 peakTuesday 25 August 202622 peakWednesday 26 August 202617 peakThursday 27 August 202617 peakFriday 28 August 202621 peakSaturday 29 August 202626 peakSunday 30 August 202628 peakMonday 31 August 202619 peakTuesday 01 September 202617 peakWednesday 02 September 202624 peakThursday 03 September 202620 peakFriday 04 September 202631 peakSaturday 05 September 202627 peakSunday 06 September 202628 peakMonday 07 September 202632 peakTuesday 08 September 202635 peakWednesday 09 September 202630 peakThursday 10 September 202628 peakFriday 11 September 202635 peakSaturday 12 September 202645 peak
Daily peakEvery hourly sample

All time

4 months, June 2026 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.

0111222333444Jun 2026Jul 2026Aug 2026Sep 2026June 2026411 monthly peakJuly 2026102 monthly peakAugust 202683 monthly peakSeptember 202645 monthly peak
Monthly peak

The last four months

Show:

The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.

0285583110July 2026August 2026September 2026October 2026July 2026102 peak — daily detail belowAugust 202683 peak — hourly detail belowSeptember 202645 peak — hourly detail below
Monthly peakHas finer data

July 2026

31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.

028558311001 Jul06 Jul11 Jul16 Jul21 Jul26 Jul31 JulWednesday 01 July 202689 peakThursday 02 July 202680 peakFriday 03 July 202685 peakSaturday 04 July 202688 peakSunday 05 July 202687 peakMonday 06 July 202670 peakTuesday 07 July 202664 peakWednesday 08 July 202661 peakThursday 09 July 202682 peakFriday 10 July 202682 peakSaturday 11 July 202671 peakSunday 12 July 202684 peakMonday 13 July 202669 peakTuesday 14 July 202655 peakWednesday 15 July 202655 peakThursday 16 July 202645 peakFriday 17 July 202648 peakSaturday 18 July 202693 peakSunday 19 July 2026102 peakMonday 20 July 202675 peakTuesday 21 July 202667 peakWednesday 22 July 202665 peakThursday 23 July 202652 peakFriday 24 July 202664 peakSaturday 25 July 202660 peakSunday 26 July 202671 peakMonday 27 July 202664 peakTuesday 28 July 202657 peakWednesday 29 July 202644 peakThursday 30 July 202651 peakFriday 31 July 202654 peak

August 2026

31 days as the curve, each the highest figure that day. Behind it, 245 hourly samples from 13 Aug, which is as far back as the source keeps every hour. Weekends are shaded.

02245679001 Aug06 Aug11 Aug16 Aug21 Aug26 Aug31 AugSaturday 01 August 202653 peakSunday 02 August 202683 peakMonday 03 August 202662 peakTuesday 04 August 202637 peakWednesday 05 August 202636 peakThursday 06 August 202638 peakFriday 07 August 202634 peakSaturday 08 August 202638 peakSunday 09 August 202639 peakMonday 10 August 202631 peakTuesday 11 August 202632 peakWednesday 12 August 202627 peakThursday 13 August 202621 peakFriday 14 August 202626 peakSaturday 15 August 202642 peakSunday 16 August 202641 peakMonday 17 August 202632 peakTuesday 18 August 202622 peakWednesday 19 August 202625 peakThursday 20 August 202623 peakFriday 21 August 202622 peakSaturday 22 August 202626 peakSunday 23 August 202630 peakMonday 24 August 202619 peakTuesday 25 August 202622 peakWednesday 26 August 202617 peakThursday 27 August 202617 peakFriday 28 August 202621 peakSaturday 29 August 202626 peakSunday 30 August 202628 peakMonday 31 August 202619 peak

September 2026

12 days as the curve, each the highest figure that day. Behind it, 203 hourly samples. Each dip is a night. Weekends are shaded.

01224364901 Sep03 Sep05 Sep07 Sep09 Sep11 SepTuesday 01 September 202617 peakWednesday 02 September 202624 peakThursday 03 September 202620 peakFriday 04 September 202631 peakSaturday 05 September 202627 peakSunday 06 September 202628 peakMonday 07 September 202632 peakTuesday 08 September 202635 peakWednesday 09 September 202630 peakThursday 10 September 202628 peakFriday 11 September 202635 peakSaturday 12 September 202645 peak

October 2026

How to Make an Atomic Bomb in Your Garden was released on 9 Jun, 2026.

Not out yet.There is nothing to draw for this month.
Nothing here is interpolated or estimated; where a sample is missing the line is broken.

Game information

Updated 12 Sep 2026, 21:14 UTC
App ID
3700980
Last updated
27 Jul 2026 build 24409761
Developer
karahan
Publisher
karahan
Release date
9 Jun, 2026
Platforms
Windows
Download size
4.08 GB
Install size
4.36 GB
Genres
Adventure, Casual, Indie, Simulation
Game modes
Single-player
Controller support
Unknown
Achievements
14

Features & support

Steam features

Family Sharing

Controllers & input

Accessibility

Stereo Sound

Popular tags

IndieSimulationAdventureCraftingCasualDark HumorBuildingFirst-Person3DDark ComedyParody RelaxingImmersive SimManagementLinearRealisticSingleplayerTime ManagementLife SimMultiplayer
About this gameFull description from Steam
It’s a quiet Sunday morning. You're relaxing in your backyard when it suddenly hits you: You need to build an atomic bomb. Naturally. In this absurd single-player simulation, your peaceful suburban life takes a wild turn as you attempt the most questionable DIY project imaginable. Building a nuclear bomb in your backyard might not be the hardest thing you’ve done but it’s definitely the weirdest. What You’ll Be Doing To complete your creation, you’ll need to: Raise funds via a chaotic mini-game that tests your charm and hustle. Go shopping: Bid on auctions and scour regular online stores for those oddly specific blueprint parts. Do the math: Turn everyday household objects into actual atomic equations. Extract critical materials from totally unrelated household items. Assemble everything with precision... or at least, something close to it. Handle your nosy neighbors, who are just a bit too curious. Avoid IRS scrutiny, because spending your fundraiser money on plutonium raises red flags. Manage your stress using strange and increasingly unhinged coping mechanisms. The Goal The game is split into three major stages of building, each bringing its own unique challenges that will test your patience. Complete all three to finish your project ideally without any accidents along the way. Disclaimer: Some elements in this game are inspired by real-world nuclear formulas. Do not try this at home. Do not be inspired. Seriously. Estimated Playtime: 30–183 minutes
Content & age ratings2 regional ratings

Regional ratings

DEJUS14Linguagem imprópria · Atos criminosos
IGRS15Rokok dan/atau rokok elektronik, minuman beralkohol, narkotika, psikotropika, dan/atau zat adiktif lainnya · Penggunaan bahasa
System requirementsMinimum and recommended hardware

Minimum

Minimum: OS: Windows 10 64-bit Processor: Intel Core i3-4170 - AMD FX-8120 Memory: 8 GB RAM Graphics: NVIDIA® GeForce® GTX 960 Storage: 5 GB available space

Recommended

Supported languages11 languages
LanguageFull audio
English
French
Italian
German
Simplified Chinese
Japanese
Korean
Portuguese - Portugal
Russian
Turkish
Hungarian

A blank audio cell means full audio was not marked in the returned language list.

Screenshots & trailersScreenshots and trailers

Trailers

AchievementsTotal count and selected achievements

14 achievements in total.

Show selected achievements (may contain spoilers)
Welcome to the WatchlistAchievement
Stage 2Achievement
Stage 3Achievement
Stage 4Achievement
Wife's gonna kill youAchievement
Love throwing stuffAchievement
CursedAchievement
StockbrokerAchievement
Oh look, a pennyAchievement
StrikeAchievement

View all Steam achievements

DemosPlayable demos on Steam

4 developer announcements, Jun 2026 to Jul 2026 · times in UTC

July

  1. Game patch 3.0

    Added a new mini-game for Dancing Jesus to help players recover their lost in-game currency.Added Head Bob and Camera FOV settings.Added wide screen support.Added German community translation.Added Hungarian community translation.Added…

    Patch notes

June

  1. Added Achievements

    Achievements are now live! Also planning to add more achievements in the future based on your feedback and suggestions.

    Patch notes
  2. Game Patch 2.0

    Hi everyone, thanks again for all your feedback! Almost all reported bugs have been fixed. Here are some of them:Added extra instructions/guides to clear up confusion around crafting RDX.Fixed the Slickstarter issue in stage 3 where it…

    Patch notes
  3. Game Patch 1.0

    Patch Notes First of all, thank you so much for your bug reports and feedback they have been incredibly helpful! All bugs reported so far have been fixed. Here are some of the key fixes:Fixed translation errors in Stage 2.Fixed explosive…

    Patch notes

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