Godot 4.6 with .NET 10 implementation (and Godot 4.6 C# Web support)

[WithinAmnesia]

Describe the project you are working on

Godot 4.6 should have .NET 10 implementation to support long term support game projects targeting the next console generations of PS6 and Next Xbox scheduled to be released in late 2027.

https://dotnet.microsoft.com/en-us/platform/support/policy/dotnet-core
https://dotnet.microsoft.com/blob-assets/images/illustrations/release-schedule-dark.svg

November of 2025 (this year) is to be a big year in that Long Term Support version .NET 10 is to release and that is to be the version that can be used to build the games of the next console generation of 2027+.

It looks to be that Godot 4.5-stable is to release around middle September or October of 2025 and this leaves a period of a month or two where Godot 4.6 is to be in dev / alpha and or beta adding features.

I think it would be wise to use the pre-release versions of .NET 10 ( https://dotnet.microsoft.com/en-us/download/dotnet/10.0 ) to start work on .NET 10 for Godot 4.6 which should also have the C# web support also ( godotengine/godot#106125 ). Godot 4.6 if it takes 6-8 ~7 months to release after September - October 2025 4.5-stable that would take 4.6 with I think it would wise to have 4.6 include .NET 10 and C# web support and start work on that now given that 4.5 de facto is in feature freeze. If 4.5-stable launches in ~September of 2025 that could mean with ~7 month launch cadence that, September, October, November, December of 2025 into January, February, March even April of 2026 in as were that could likely be where Godot 4.6-stable can properly release come February-March-April (~March) of 2026.

If Godot 4.6 misses .NET 10 support and is pushed to Godot 4.7 of a potential late 2026 stable release window that is not enough time to get proper launch and early holiday 2027 video game titles for the next console generation being made with Godot 4.x. Godot must act for Unreal knows that is and their latest PS6 Xbox Next engine version of Unreal 5.6 is already out and being used to make PS6 and Xbox next launch titles.

I wish for Godot to be competitive in the video game development industry and target .NET10 and C# Web support for Godot 4.6 to keep up pace with the current industry realities and future proof the engine for the next console generation.

In Summary:

Godot 4.6 with .NET 10 LTS implementation is vital for getting video game studios properly equipped to make launch and early next console generation titles be ready by late 2027 come the scheduled launch of PS6 and Xbox Next in holidays of late 2027. Devs needs ~2 year lead up window with a LTS launch target specs to work with. If Godot 4.6 can have a stable release in ~March 2026 with .NET 10 LTS implementation this sets the foundations for proper game dev work on larger scale games to competitively use Godot dev ecosystem getting ready for proper 2027 next console generation releases to compete with Unreal 5.6.

Also C# Web support should be included in Godot 4.6 to be able to use the most powerful version of Godot to help devs target multi platform releases. The Xbox ecosystem is targeting cloud gaming and web services at least and Steam is right there and Sony is trying to expand the PS Portal ecosystem and get their handheld gaming device going ready for ~2027-2028-2029. So it would be wise for Godot to set the foundations for success to be ready for the campaign of next generation launch titles on: PS6, ~PS5 handheld, Xbox Next, Xbox RoG and Xbox RoG II / Xbox Next handheld 2027-2028-2029, and then the Steam Deck II and Nintendo's Switch II successor and hand held lines also and the web service providers and maybe Amazon web services will give it a go in 2027-2028 also; they are still on the fence a bit but I wish them to give it a shot.

Everyone is target 2027 for the next console generation and everything is marching to that beat right now and the video game development industry needs .NET 10 support early by at least ~March 2026 in order to keep pace. Also Godot needs C# web support to be in proper position to get ready for mass cross platform ecosystems being developed right now. Godot 4.6 can be competitive but it needs to get the goals targeting the important things early so it gives studio devs the proper ~2 year lead up to go hard and crank out great games ready for the late 2027 console release deadline / ready for go time.

Take care and best of luck. Feel free to ask questions, give feedback. Godot 4.6 can win big and we gotta keep working but if we do things right we can get ready for the next big video game industry chapter with the Tenth Console Generation. Keep up the good work and keep being great!

Describe the problem or limitation you are having in your project

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Describe the feature / enhancement and how it helps to overcome the problem or limitation

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Describe how your proposal will work, with code, pseudo-code, mock-ups, and/or diagrams

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If this enhancement will not be used often, can it be worked around with a few lines of script?

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Is there a reason why this should be core and not an add-on in the asset library?

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[Calinou]

Moving to discussion, as there is no concrete technical implementation provided. (Questions on the proposal form are not optional; all of them must be filled.)

[WithinAmnesia]

Okay thank you. That makes sense. I'm a bit busy right now but I figured to try and spread the word and get lots of talented people as like your yourselves to look at how to best help Godot get ready for the Tenth Console Generation. A discussion makes more sense thank you. The more people thinking about this the better too. I wish to help and best I can but I'm a bit busy right in the industry now (everyone in the industry is busy busy getting ready for late 2027) but I figured to share the upstream big mover plans things to get people ready too. Feel free to ask questions and all feedback is welcome. Godot is Great!

[theirishninja]

Attempted to build a godot 4.5.1-stable editor+template against net10.0 rc2 and it fails out. Likely a bug since .net10 is supposed to be backward compatible with 8.0 - might be worth digging through potential breaking changes.
net10.0
...

ERROR: modules\mono\mono_gd\gd_mono.cpp:801 - .NET: Failed to load project assembly.
ERROR: modules\mono\mono_gd\gd_mono.cpp:801 - .NET: Failed to load project assembly.
ERROR: modules\mono\mono_gd\gd_mono.cpp:801 - .NET: Failed to load project assembly.
ERROR: modules\mono\mono_gd\gd_mono.cpp:775 - .NET: Giving up on assembly reloading. Please restart the editor if unloading was failing.

-- Not an issue with net9.0

[sate05]

me too, had the same problem when trying to upgrade my project from dotnet9.0 to dotnet10.0 (full release)
switch back to <TargetFramework>net9.0</TargetFramework> and issue is gone

Godot_v4.5.1-stable_mono_linux
same error messages as above

edit: version is wrong, mine is not 10.0 full release, check it again and it still rc1.
edit2: upgrade my dotnet version from rc1 to release and error is gone, problem fixed.

[sate05]

found a temporary fix. here godotengine/godot#111246 (comment)

[ghost]

Hey there! I'm a contributor to the .NET backend. C# web support is in work. Raul is working & testing it. .NET 10 support? We'll have to discuss it, I'll talk about it on the contributor chat.

[Domigome]

Can't wait to try the C# web support! Let us know when it's ready tor try!

[haslingerm]

One of the benefits of Godot over Unity is not being stuck with an ancient .NET version.
Manually changing the target framework from net8.0 to net10.0 works fine for my projects, but it would be nice to have it as the default, if possible.

Also looking forward to trying that web export, maybe for 4.7 as experimental?

[ghost]

One of the benefits of Godot over Unity is not being stuck with an ancient .NET version. Manually changing the target framework from net8.0 to net10.0 works fine for my projects, but it would be nice to have it as the default, if possible.

Also looking forward to trying that web export, maybe for 4.7 as experimental?

Well, .NET 10 was launched just a few months ago so I suppose it will be added next year.
It is not guaranteed that it may be in 4.7 as a experimental feature, because it is not ready yet.

[Calfur]

When updating Godot Mono from 4.5 to 4.6 I noticed that dotnet 10 got installed with it.

So I tried to upgrade my project from dotnet 9 to dotnet 10. So far I got no issues, looks like everything runs fine.

I have not seen an official confirmation for support of dotnet 10 though.

[JimmyCushnie]

The way it works is that Godot Mono targets a certain dotnet version (currently dotnet 8), and you can use anything backwards-compatible with that. Dotnet 10 projects can use libraries that target dotnet (core) 3.1 and later. When dotnet 11 comes out this November, it will also be backwards-compatible with dotnet 8 and you'll be able to update your Godot project to 11 instantly without waiting for an update from Godot.

[Calfur]

Okay thank you. I think I had issues with dotnet 10 before updating to Godot 4.6, so I'm not sure whether there were some fixes coming with this update or whether I did something wrong.

Do you know why dotnet 10 gets installed along Godot 4.6?

[zachary-kaelan]

Does Godot benefit from the performance boosts of later dotnet versions?

[haslingerm]

The default is .NET 8. You can switch to .NET 9 or 10 yourself, typically without any issues. Then code executed only within the runtime will benefit from the performance improvements. This does not affect native transitions (calling into engine code) or the engine itself. So it depends mostly on how much logic you have running in .NET (threads) and how much is "just" script code mostly calling the engine API.