Hi, sorry for not replying it earlier. Your post was somehow flagged by itch, so I didn't see it.

But answering your question: it should be immediately, so if it doesn't, please send me a DM over there (my profile: https://uniday.studio/user/UnidayStudio) and I'll help you!

Update: This should be fixed for 1.4. 

Thanks for the report!

That's truly a masterpiece! I made sure to also do a donation to support your work. Keep it up. :)

Hi, thanks for the report! Just letting you know that I'm investigating the issue.

:)

Hi, thanks for reaching out! I'll help you now. For your information, if you want/need better or direct contact with me, you can join our discord server and ping me over there too.

Regarding the error:

Can you please provide a little bit more information? What exactly you did and how this message appeared? You created a new project? What is the step-by-step? 

But in advance, this seems like an error message regarding an asset name with invalid characters in it, so you can simply edit the asset and remove this character (right click the asset and rename it). They are invalid because some characters are not allowed for the operation system to be used as file names. So Cave cannot save them properly.

It is very active in development! Itch doesn't show it because the engine downloads are in our website, so the URL doesn't change for itch. But the last release was November 13, 2025.

Due to the amount of new users getting the engine right now, the server is having a hard time catching up. Please DM me in our website: https://uniday.studio/user/UnidayStudio and I'll manually confirm your purchase for you.

Create an account to the website using the same email you have on itch here: https://uniday.studio/cave/onboarding and then, once logged, you should be able to download the engine here: https://uniday.studio/cave/download

This is necessary because our server will build a new Cave Engine specific for you. :)

Cave is meant for 3D Game Development, once your game is ready, in a matter of seconds, with a single click, you can export it to a standalone executable (Linux and Windows) and ship it. Our latest steam game, Crow, for example, was made in Cave.

Hi, thank you for the interest in question! I'm not really sure if I got your question. Cave Engine is a Windows and Linux game engine and it allows you to natively (using the engine) build Windows/Linux games/apps. You can use other python libraries in it too. 

Hi, it doesn't take a while, our website automatically connects to itch to make sure your download is ready. But your account at uniday studio must be using the same email address you used in your purchase (here on itch), otherwise it won't recognize you. If you want me to double verify that for you, please DM me at our website (my profile: https://uniday.studio/user/UnidayStudio) OR send me an email at guilherme@unidaystudio.com.br with the email you used in your purchase OR ping me on our discord server and I'll be happy to help you. Which option you find more comfortable with. 

Thank you for choosing Cave and I apologize for the inconvenience in advance. 

thanks!

😅

Glad to know you found the problem. If you need anything else, let me know!

Hi! I'll help you figure all that out! Does your graphic card/machine support OpenGL 4.3+?

If possible and you want, please ping me on our discord server, that way I can answer to you more quickly and help you figure out what is wrong. 

Now do it in Blender Game Engine. :D

Thank you! No, I've made it using pygame.

Yes! By buying it right now, you'll be guaranteed to get all 1.x.x updates, meaning that you won't have to worry about that for many years to come.

As a reminder, after 1.9.9 it's not necessarily 2.0, it follows itch's version control convention: major.minor.patch, so something like 1.999999999999999.999999999999999 is completely possible. 😅

Hi, what problems are you having? I'll happily help you with them! If you can, ping me on our discord server and let me know, so I can instantly help you: https://bit.ly/discord-uniday-us 

Hey, just letting you know that I've fixed it and updated for version 1.0.3 (already available). Thank you for the report.

Hi, thank you for the report! I'm already working on a fix for it. If you want, you can join our discord server for further help. 

Defintely!

Not yet, and the main reason is that we don’t currently have the necessary VR hardware in the studio for proper development and testing.

That said, if interest in VR continues to grow, we may consider adding support in the future. For now, our focus is on PC (fully supported) and Web (currently in development).

Hi, thanks for your interest in Cave! I really appreciate it.

We previously had a free version for a long time, but after careful evaluation, we found that maintaining it was not sustainable for us—both technically and financially. It also significantly impacted our ability to provide quality support and continue improving the engine.

Because of this, we’ve decided to focus entirely on the paid version, and we don’t have plans to release a free/demo/trial edition. That said, I understand that many of you would like to try Cave before purchasing, so we’re working on providing as much in-depth content as possible on our YouTube channel to give you a clear look at what the engine offers.

Hi, thank you for the interest in the engine. The period where it was free was a very good experiment to see that it is very hard to maintain the engine that way. So the future of Cave was either get completely closed (meaning that only us at Uniday Studio would be able to use it and no one else) OR have this small price that would allow us to alocate time and resources here in the studio to handle the public version. 

In the end, that was the right choice. The results were VERY positive and the engine is already seeing the results of it with new features, quality of life improvements and more. Community is growing nicely also, with lots of cool games and projects being developed in it.

Once again, thank you for being around!

Hi! Cave no longer have a free version available. If you had an early version of the engine that was free downloaded in your machine, you can still keep using it, as the license permits it. But all download links for those old versions are now offline and won't be made available again. Thank you for the interest in Cave!

Thank you! Yes I'm working on ways to showcase the engine more, specially with games like this that were made using it. I've made a video about this particular game two months ago, but it didn't get enough traction on YouTube, unfortunately.

it supports any card with OpenGL 4.3+ support, which an RTX 3070 definitely does (and probably any card released over the past 12 years).

Hey @ObelixSoftware! Thank you for purchasing cave. This error seems to be related to video drivers and/or v-sync. What is your graphic card? The most straight forward fix to it is to update your graphics drivers. If they're already seem to be up to date, I would ask you to try a different driver other than the one currently installed. If you need fast help, consider contacting me directly on Discord also.

Hello, everyone!

 I have some news regarding the first Cave Jam. Since around 80% of the current user base is pretty new to the engine (less than two weeks) and also that less than half of y'all have previous experience with game dev in general (according to a research I ran), I decided to extend the deadline for the jam to incentive y'all to try to finish your games!  

Even if it's a small game, I believe that it will be a great step for YOU and also for the Engine (which of course benefits you).

New Deadline:

So there is still plenty of time to finish: It will be live until January 20th, 17h BRT (UTC -3) (Brazil), 12h PST (UTC -8) (California), 20h GMT (UTC +0) (London). Let me know if you need anything!

Yes. :D

Hey everyone! Since we are close to our first Cave Engine Jam, I'll be hosting a JAM SALE with 20% OFF until the event ends! 

So if you didn't get the chance to acquire the engine yet, this is the perfect timing for you! 

You can Check the JAM SALE here:

[Get Cave Engine with 20% off]

Verdade! Valeeeu!

Yes. In my case, it was amazing, but that's also due to the fact that I'm also the developer behind the engine itself. The latest version available for public download is very outdated already, I'm working on to release the current one we are using here at the studio (and that I used for this game as well) + a lot of documentation so everyone will be able to understand and use it. Stay tuned! :)

Hi! I made this game for the Ludum Dare 55 using Cave Engine. If you also participated, consider visiting my LD page here: https://ldjam.com/events/ludum-dare/55/sandtown

Thanks!

This is a PILOT for the MMORPG Game Jam, so as everyone already expected, I'll be experimenting with the rules and options a bit. So I would like to ask: 

Should I extend the Jam deadline?

I was thinking about a week (7 days) instead of 3 days. What do y'all think?

What I don't think it's cool is if we keep the 3 days deadline, but no one manages to finish in time (meaning that we should've extended it). So let me know how y'all projects are going and if I should keep it 3 days, change or to 7 OR something in the middle.

Welcome to the Jam!! If you want, you can team up with someone from my discord as well: [Join it here]