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That's right! Now you too can own every Isotope ever!
Race through high energy reactors and particle accelerators as the infinitesimal "Mr. Big", riding an ultra-high tech monowheel cycle, collecting particles, conducting experiments, dodging and doing battle with antimatter and radioactive isotopes, solving puzzles, and discovering the Periodic Table.
| App ID | 1536590 |
|---|---|
| App type | Game |
| Developer | Randy Lee Blain, Jason Blain |
| Publisher | Monumental Arts Engineering, LLC |
| Homepage | http://monumentalartseng.com/cyclotronica/ |
| Release date | 14 March 2021 |
| Original release | 14 March 2021 |
| Release state | released |
| Controller support | full |
| Store page | store.steampowered.com/app/1536590 |
| Last store refresh | 11 hours ago |
| # | Executable | Arguments | OS | Description |
|---|---|---|---|---|
| 0 | Cyclotronica.exe | windows | Cyclotronica |
Hourly peaks, UTC. All-time peak covers SteamRaw's recorded history.
All Steam store regions, converted to USD at today's exchange rate, compared with the US price. Lowest is the lowest price SteamRaw has recorded for that region.
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| Date | Price | Regular | Discount |
|---|---|---|---|
| 11 September 2026 22:21 UTC | $9.99 | $9.99 |
| DLC | AppID | Release | Price |
|---|---|---|---|
| No DLC known for this app. | |||
| Branch | Build ID | Description | Updated | Password |
|---|---|---|---|---|
| public | 7266997 | 28 August 2021 18:17 UTC | ||
| osx64 | 7266994 | OSX x64 Version | 28 August 2021 18:16 UTC | |
| win10x64 | 6527509 | Windows x64 Version | 12 April 2021 15:00 UTC |
| Depot | Name | OS | Size | Download | Public manifest | Notes |
|---|---|---|---|---|---|---|
| 1536591 | windows · 64 · english | 899.07 MB | 337.20 MB | 4242235449573776491 | branches: osx64, win10x64 | |
| 1536592 | macos · 64 · english | 898.49 MB | 338.90 MB | 5168419330835262058 | branches: osx64, win10x64 |
A build is one published version of the game's files on a branch. Steam assigns a new build ID every time the developer pushes an update, so this list is the update history of the app. The files inside a build (depot manifests) are only readable with an account that owns the game, which SteamRaw does not have yet, so build contents are not shown.
| Build ID | Branch | Updated | First seen |
|---|---|---|---|
| 7266997 | public | 28 August 2021 18:17 UTC | 11 hours ago |
| 7266994 | osx64 | 28 August 2021 18:16 UTC | 11 hours ago |
| 6527509 | win10x64 | 12 April 2021 15:00 UTC | 11 hours ago |
Every appinfo change SteamRaw has observed, grouped by changelist. Tags, features, languages, builds, depots, prices and any other key Steam publishes. Tracking since at least 11 September 2026 22:21 UTC (estimated from the earliest recorded change; the exact first fetch was not stored).
No changes recorded since SteamRaw first saw this app. Every future PICS change will be listed here.
| Changelist | Apps | Packages | Seen | What changed |
|---|---|---|---|---|
| No changelists recorded for this app yet. | ||||
That's right! Now you too can own every Isotope ever!
Months Of Obsessive QA Are Beginning To Pay Off. Jason here, junior Dev and Designer for Cyclotronica. I've been working on this update for some months now, and learning a lot more about coding along the way. Dad/Randy/Our Senior Dev has been teaching me how to code in Unity for a couple years now so this was sort of a final Exam to get this latest update out. I'm therefore pleased/relieved to announce more progress on Cyclotronica! New Stuff: Cyclotron Track Builder We've added a brand new Track Builder with well over 300+ Track Section Prefabs with which you can now construct YOUR VERY OWN P
Added Sandbox Mode, with our first Lab Bench Item, the Isotope Chamber! Spawn and observe any Element on the Periodic Table. Bombard it with Neutrons and watch it change or transmute. Bombard it with Antineutrons and watch it fall apart. Added 400+ new Isotopes: Hydrogen through Calcium. Tellurium, Iodine, Xenon, Caesium, Barium. Everything from Mercury up to Oganesson. All major Radioactive Decay Chains. There are now Radioisotopes in Level 4 "Mobile Chernobyl" now much more varied and flexible. Miscellaneous UI Updates: Specific sounds for when Protons repair damage on collect, and when your
Thanks y'all. Let me know if you run into anything else. We're working on a couple different PVP/Team levels. Battlebowl/Derby. Also working on Isotope Cascading. Aiming to give Atoms greater autonomy over their behavior.
Happy Equinox! Updated impact physics numbers on the various projectiles in the game including: Alpha Particles Beta Particles Gamma Rays Proton Shot Fast Neutron Lithium-7 Bullets Carbon-14 Electrodes in Tunnels as well. As a result, the behaviors for Uranium-235 and other Radionuclides will be a little more unpredictable. Level 4 and 5 are examples.
Updates on Splash Dialog System Added to Splash Shepard's Tone New Game Dialog updated, choice of Tutorial RTFM or Skip Tutorial TL;DR Tutorial Reinstated Properly, per Beta Tester Feedback Text edits galore, formatted for better readability and organization. Fonts adjusted. Minor Fixes Blank Slots for PNE Inventory Until Collected. Ok NOW we're rolling. We are working on Multiplayer as this message is being printed. Working on a big Roller Derby 10-Player Map. Will come with more soon. All the best to you.
Got the last of the UI basics worked in. Dialog Box System, Specimen Insets, Improved catalog workflow at the end of missions. Minor UI bugfixes. Got quints on the internal build commit number. #6377777
Set up colliders so that curious users don't wedge themselves into the Atom Assembler dais at Level 1 end. Adjust level end trigger. Adjust UI toolbar on Catalog Mode. Let us know if you run into anything else. Happy to investigate. Thanks for the feedback.
Full appinfo as delivered by Steam PICS, changenumber 34862986. Also at /api/app/1536590/raw.
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