Powerful Realtime 3D Electronic Circuit Simulator
| App ID | 2198800 |
|---|---|
| App type | Game |
| Developer | Mike Bushell |
| Publisher | Mike Bushell |
| Homepage | https://www.crumbsim.com/ |
| Release date | 2022-11-18 22:02 UTC |
| Release state | released |
| Store page | store.steampowered.com/app/2198800 |
| Last store refresh | 15 minutes ago |
| # | Executable | Arguments | OS | Description |
|---|---|---|---|---|
| 0 | CRUMB.exe | windows | ||
| 1 | CRUMB.app | macos |
| Playing now | 21 (44 minutes ago) |
|---|---|
| 24-hour peak | 31 |
| All-time peak (tracked) | 31 2026-09-11 21:10 UTC |
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.
Loading regional prices…
| Date | Price | Regular | Discount |
|---|---|---|---|
| 2026-09-11 21:00 UTC | $6.74 | $8.99 | -25% |
| DLC | AppID | Release | Price |
|---|---|---|---|
| No DLC known for this app. | |||
| Branch | Build ID | Description | Updated | Password |
|---|---|---|---|---|
| public | 17183476 | 2025-01-30 11:17 UTC | ||
| debug | 16301507 | CRUMB Debugging | 2024-11-05 13:48 UTC |
| Depot | Name | OS | Size | Download | Public manifest | Notes |
|---|---|---|---|---|---|---|
| 2198801 | windows | 1006.27 MB | 59.09 MB | 4704387317878886653 | branches: debug | |
| 2198802 | macos | 1004.21 MB | 56.86 MB | 8499370740590997062 | branches: debug |
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 |
|---|---|---|---|
| 17183476 | public | 2025-01-30 11:17 UTC | 3 hours ago |
| 16301507 | debug | 2024-11-05 13:48 UTC | 3 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 2026-09-11 21:00 UTC.
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. | ||||
Good evening ladies and gentlemen!I’m continuing to pour my life into this next version of CRUMB and I have a little something to share with you all! It is now possible to connect real hardware to CRUMB and interact with it, in this example we can flash an Arduino R3 with the same code that’s running in the simulator 🤩Much love!Mike
Just another quick update everyone! So excited for this one.I always had a vision for the original CRUMB to run DOOM, but the Arduino I simulated was not the right component, nor was there enough simulation power/optimisation to even dream about fully simulated ARM architecture for a Raspberry Pi. However that has changed and v2.0 is going to open up huge doors to infinite possibilities.Take a sneaky peek at DOOM running in the 2.0 development build, even with I2S audio processing as part of the circuit! It’s surprising me the power v2.0 has and the capabilities it can reach!
Time for another CRUMB 2.0 update boys and girls!! This time a much requested feature from the last few years, mechanical/physical components! Even better, you can back feed values into the simulator to accurately simulate loading and other important circuit dynamics. There will be a little break until my next update, but be sure to keep an eye out 🤩
Not just eye candy... An entirely new and revamped wiring system will make it easier to prototype and iterate quickly layouts and connections. Prototyping jumpers offers a fast way to create connections and adjust them on the fly. Wire routing with small jumpers has had a facelift and the wires remain fully adjustable after placement! So excited to bring this to everyone! C P.s yeah... just an Uno thrown in for good measure 😉
Good early morning everyone! (GMT+1 😂) As always, smashing through development at all hours and have got a little something to show! The Arduino implementation in the current version of CRUMB is not up to standard. It was an architectural decision on how I implemented it at the time and I needed to go away and become a better developer before I could improve it... Thankfully that day has long since passed and I am proud to show off some real usage of version 2.0 and a couple of screenshots below! Night night!
Just a quick little preview screenshot from the development build 🤩 I will post a major update soon regarding release for 2.0. But honestly, just look at that.... A proper Scope, showing trigger edges. A Multimeter with true to life options 😁 I listened to all of the feedback and settled on one thing, the next version of CRUMB is to be a world leader in electronic interactivity that is true to life! Lastly, a warm welcome to all the new users from the recent sale! You are very lucky to have come onboard for the journey and will have full access to this next edition on release! Speak to you a
Program shaders from within CRUMBSome people may look at this update and ask the question "why do we need this?"... And the answer is very simple. One of the core concepts and non-negotiable features that CRUMB 2.0 needs to have, is for users to have the ability to create components with the same fidelity, at the very least, as the ones that I created in the 1.x versions of CRUMB. In order to do this, I need to give users the ability to create custom materials at a great depth in order to achieve the level of realism and fidelity that I think CRUMB 2.0 should be able to provide.Jump into the v
EDIT: I have re-written this post due to some interesting comments that it looked like it was written by AI. Strange time we live in, but hopefully this reads like a normal person now 😒 Good morning/afternoon/evening everyone!A massive welcome to all the new members of the community, and a big thank you to those of you who have been following along with the journey toward v2.0. The patience is very much appreciated and you’re not far off seeing it pay off now 😊Progress lately has really picked up pace. Since the last update, I’ve been fully focused on what is essentially the “brain” of v2.0,
Good morning/afternoon/evening to everyone! First of all, welcome to all the new users of CRUMB! And a big heartfelt thank you to everyone who has been with CRUMB since the beginning and patiently waiting for the next ground-breaking update. I appreciate all of your comments, good and bad and it is taken wholly into consideration for the future. Progress with v2.0 is moving along at a pace now. Having suffered nearly 2 years of non-starts due to technical limitations found with various tools, I have now overcome all of these and ticking boxes everyday! I have had to build my own foundations up
After the bold decision to leave Unity and switch to Godot for development, the next major iteration of CRUMB will benefit from fully native customisable docking windows and layouts. With the added benefit of built-in code editing functionality, bringing custom components one step closer!2.0 will be released as a free update in the future to all existing CRUMB users
Hello everyone, Contrary to some of the recent reviews saying the project is dead, it is not... I just happen to be working on this in my absolute spare time between work, family and living! I have had a few comments, discussions and reviews highlighting differences found between CRUMB and real world applications. It would be great to hear from you all and get your feedback on your findings! Once I have fully sorted out custom component building and programming, most of these issues will go away as I'm sure the community will be able to create more accurate components in addition to the basic
Fixed memory leak from the C++ MatrixMath.dll when running large complex circuits. As users are starting to build larger, the solving logic runs through a few more steps to converge and one of the steps had an overlooked leak. CRUMB 2.0 update: Still hard at work, but I think I am at the point of needing to move from a solo project and make a team. I am putting in alot of hours!
Slight change to the convergence code of the Diode Element as there were some unique circuit configurations unable to solve, causing a memory leak as the Math Engine tries to compensate
More fixes! 74HC245 fixed issue with the DIR pin not functioning correctly and causing a crash due to matrix error Corrected pin labels for 74HC245 and 74HC273 Fix issue with a single remaining pin label after a component delete with pin hints enabled All the best Mike
I have removed support for AVX2 for the time being as it would appear that some users do not have support from their CPUs. The performance loss is negligible, if any, and should stop crashing for affected users! As always, please get in touch with any issues that you may be having All the best Mike
Full appinfo as delivered by Steam PICS, changenumber 38370048. Also at /api/app/2198800/raw.
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