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the game wont download could you help please


  1. Are you using a mac or a PC?
  2. Which web browser are you using?
  3. When you click the download button, what happens?

Hey, I can't save robots  in the latest version. Do I need to manually save it or is it just broken? 

Sorry about that!  We introduced a few features in rapid succession that caused the problem (see comments from 17 days ago).  The fix is fairly painless.  You just need to add a few things to the affected robot’s save files.  Here’s a link detailing how to fix the files:

Is there a 32bit version of this application?


We don’t have a 32-bit machine to test on, so we weren’t planning on making one.

to test it on a 32 bit os run it in a vm.

(Win 10 is free to download and use from the microsoft website).

will you add an online mode like RA2 eventually

Unfortunately it isn’t currently in the budget.  I did a projection a few months ago, and we estimated it would add a few hundred thousand dollars to the development costs to properly rebuild the game around online multiplayer.  Our total budget is only a small fraction of that.

Please if you could, please make a horizontal spinner similar to carbide or tombstone, and make a new full body spinner that is actually good.

I have posted my issues on GTM, Keep up the good work tho!

Awesome!  Thank you!  School has started, so it might be a few weeks before I get to them, but once things have normalized, I should be back in the swing.

The game is looking fantastic as of the August 6th build. Great work!!

Thank you!

do you have a release date for the game to come out yet 

We still have several thousand hours of work left to do, so we are pretty far out at this point.  At the rate we are going, I expect it will be a few more years until the official release.  

Right now we are planning continue to release updates as we go, first as free public Alpha, then as closed Beta.

All three of the robots I've built in this build are immune to elimination by pits and ring-outs.

Interesting.  Any idea why?  They should trigger an OOTA volume as soon as the chassis enters it.

I can't think of anything they all have in common besides being built in the current build.

Would you mind posting the robots over on GameTechMods?  I would love to have a look...

That should be them.

I'm curious, have they turned up anything useful?

When I play as bubble gum the robot keeps destroying it self it the wheels keep coming off

Sorry about that!  Bubblegum's issues are something that we are planning to address as we shift focus over to creating the new damage system.

OK thanks

I keep getting this glitch that makes my robot not work and i cant access anything, please fix this i have made 3 bots that took my over an hour and have just disappeared.

Sorry about this!  We did a series of builds in rapid succession that created incompatibilities with robots created in previous builds.  The fix is to edit the .RR2Bot files for the robots.

You can find a complete description and how to fix the broken .RR2Bot files on the GameTechMods website.  I promise the fix isn't too painful, and feel free to ask if you have questions!

Here's the link to the fix:

If you are interested, here's a link to a more complete discussion:

The robot workshop doesn't work properly for me. If I try copy-pasting something, I can't interact with any other part of the robot from that point on, until I click on the copy of the part. At which point the copy vanishes.

Working on it!  We’ll try to have the fix ready for the next public build.

when i start up the file where do i port it too cuz it says

What App would you like too use when starting up this game

What app then eh?

If you are on a Windows PC, you should find a .exe file that should run when you click on it.  If you are on a Mac, click on the .app file.

The game only works on Windows and MacOS.

Please let us know if this doesn’t work!

Fun fact, the biting mechanic actually makes crushers much more viable, even without having hydraulics yet. They pinch wedges much more nicely and there's... another interesting side effect when dealing with robots made more out of shapes than chassis sculpting.

See post 172. :)

Unreal!  Well done!

I’m hoping that what you have shown in the photo is going to become a lot more prevalent once the new armor plating system is available.  It should be the default behavior as a piercer destroys plates, allowing it to pick up the remaining structure.

At least that’s the basic idea.  🙂

Woot! Looking forward to it. :)

How would I actually go about finding the bot files? I'm not exactly good at computers so I don't know where to even start looking.

It depends on whether you are using Windows or Mac.  

I’m using a mac, and it is a little confusing.  On a mac it is stored in a folder that is normally hidden, but can be found by the finder if you use the “Go to Folder” option in Finder:


-> Application Support

-> com.nerdislandstudios.robotrumble

-> Robots


I believe Windows stores the .RR2Bot file in the program directory.  Can someone verify?

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am on windows, but I... don't actually know what the program directory is.

edit: Well, I know it's presumably a directory full of programs, but I don't know how I'd reach it or quite what it would do

edit 2: I just stumbled across the path to reach it near the bottom of page one of the bot sharing thread. Had to look in LocalLow instead of Local, but aside from that it worked. :)

Excellent!  The files are a custom format that we made for the game.  You should be able to open it up in a text editor and see what’s inside if you are curious.

The newest build is out!

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Probably my last comment for now, the way the spinner blur works at the moment rather ruins the appearance of all but the simplest spinners.

UPDATE: On a related note, I'm trying to make a motor powered axe, and the bot keeps bouncing into the air. When the blur happened in testing, I eventually realised the game's reading it as a spinner, and doesn't seem to like the floor to enter the area through which the "spinner" would rotate if it went the full circle.

I think I found a temporary solution for the hammer. If you attach a wheel to the motor/belt/chain, and then attach the hammer to the said wheel, it should fix your issue. I accidently found that out, and I don't know how or why it fixes the issue, but it does.

The physics issue with the cylinder collider not being disabled at low speeds should be fixed on this upcoming build.

I did some major tweaking on the visuals for the blur cylinder as well.  It should look a lot better.  Let me know what you think when the new build comes out!  (hopefully today or tomorrow...)

I love the new spinner physics, but the blur cylinder - while cool for bars - isn't so good for flywheels or drums.

Overall a big improvement though. :)

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I can't figure out how to do anything with belts or chains. I can put a pulley on a motor, but how am I supposed to add a second pulley elsewhere and link the two?

UPDATE: I've found how it works now, but that leads me to another issue. I'm wondering if we'll be able to drive multiple pulleys with one motor in future, so we can drive all the wheels on one side with that one motor?


We are hoping to do multiple pulleys, but it isn’t ready yet.  On this next build, we are doing bug fixes and laying the groundwork for the new damage system via destructible armor plates.

Ooo, sweet. Looking forward to it. :)

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I built a replica of Razer (technically series 2, no wings) in the previous version. Do you have any plans for hydraulics in future versions, and/or for crushing damage? If I can figure out how to find it in the file structure I could send you the bot if you like - probably once I update it to belt drive - as a pre-built sort of test bed for that sort of thing.

Speaking of sending bots, the Stinger replica I built has a tendency to wreck itself by swinging its mace, might be useful to look at what physics are in play there? My other thwackbots don't have that problem.

UPDATE: Stinger doesn't actually break itself on the damage system in the new build, so I was able to see what was happening. You'll probably find it useful to know that right now a small enough object doesn't have to hit the floor all that fast to clip through it.

This is something that I have struggled with.  I can switch collision modes on high-speed objects, but the other collision modes are causing all sorts of instability as well.  Let me poke into this some more...

I have an issue. When I hit a bot or an object my spinner immediately stops without doing any damage 


You are correct.  Spinner damage has not yet been included.  The entire damage system itself is just a placeholder right now, and will be undergoing a complete rewrite over the next few months. 

We do have a quick fix for spinner damage coming out later this week which should provide a basic energy-based damage system, as well as fixing a bug which prevents spinners from knocking their target around.  Maybe by Thursday?


I have a question when the game comes out on steam will the game have a career mode and a tournament mode for the the game

We’ll see!  Gotta get the robot workshop and AI in shape before we work on those.

Have you updated robot rumble 2.0

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I just pushed a mini-update to support the people running Parsec tournaments on  It significantly nerfs damage, and prevents flippers from breaking off.

it a desktop computer

Ah.  Maybe still try turning down the screen resolution in the game settings?

thanks for your Help

it a advent computer 

Laptop? Desktop?

Laptops are typically going to struggle with graphics.  Maybe turn down the screen resolution in settings?

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It happens in a middle of a fight f or when i am in the bot editing a robot


Memory/CPU/GPU issue maybe?  We aren’t really in optimization mode right now, but it might be something we can work on.  If you don’t mind my asking, what are the specs of the computer you are using?

when i am trying do a fight of the game it jumping out of the game the back to title of robot rumble 2.0

When is it happening?  At the start of every fight?

it cool

when will the update be ready

Its up!

Will there timers for the battles

Eventually, yes.  Not yet though.  We still have a lot of work to do in the robot workshop before we address the battle design.

Look promising.

I agree,  I keep checking this page for the update. 

Sorry guys.  Laptop is back up.  I'm tweaking physics for the new ME0708 motor.  It is a LOT more powerful than the smaller AmpFlows, and I have had to make some changes to the new spinner physics to accommodate the motor.


Art takes time, I understand. I have waited over 10 years for something like this, I can wait a little longer.

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how will we  know when it will be updated for robot rumble 2.0


My laptop just died, and I'm in the process of building a new one.  A day, maybe two?

will there be Corner Patrol Zone   for the house robot for the game 

I like the suggestion, though we aren’t ready to focus on arena design quite yet.  I will put it onto our Trello board though.

what date will the update be for the robot rumble 2.0

Sometime between Tuesday and Thursday this week.  It depends on how the bug squashing goes today. :)

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I am excited for the next build. Great work on this.

Me too!  I can’t wait to see what you think!

when i played as Bubble gum on robot rumble 2 the weapon did not work 

It should work on the update completely out in the next few days.

I have found a bug. when a spinner like bublegum is destroyed  the spinner stays active?  but when a bot is destroyt the spinnen needs to stop in my opinion?

Agreed.  This will eventually get ironed out, but we are looking at completely scrapping the damage system and replacing it with something better, so fixing bugs like this is going to wait for a bit.

hey when will be the next update and what can we expect?

Definitely by the end of this week.  Lots of spinner and flipper updates in this version.  Stay tuned!

will there time for robot battle time for the game 

Eventually, yes.  We are looking to finish the botlab first.  Big update coming in the next few days!

will there more Axe robot in the game will you add any more robot in the game 

when will next update for robot rumble 2

I was really hoping to get something out by the end of the week.  I’m having trouble with beetle weight driving though.  We’ll see how it goes over the next few days.

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