Peter A. Williams

I work for Unity in their Polyspatial and VisionOS team. All opinions are my own.

[banteg @banteg]

mini shai-hulud song

[Unity for Games @unitygames]

Unity AI is now in Open Beta 🎉💫

We believe AI has the most impact when it helps creators move faster while staying in control of the creative process.

Use our built-in agent tuned for Unity workflows or connect the AI tools you prefer via AI Gateway and MCP Server.

[Matthew Bromberg @MBromberg]

Folks. Can I explain something about world models? Seems like today might be a good day for that.

Advances in large-scale “world models” — whether developed by partners like Google or others — materially expand the frontier of interactive content creation. These models can generate high-quality, interactive, video-like experiences from natural language or minimal input.

Today, they are primarily editable through prompting, which limits the level of determinism and precision required for production-grade game mechanics. As a result, their outputs remain probabilistic and non-deterministic, making them unsuitable on their own for games that require consistent, repeatable player experiences.

Rather than viewing this as a risk, we see it as a powerful accelerator. Video-based generation is exactly the type of input our Agentic AI workflows are designed to leverage—translating rich visual output into initial game scenes that can then be refined with the deterministic systems Unity developers use today. Our agents already generate high-quality scenes from static video. Interactive, camera-controllable video from world models would further enhance this pipeline and materially improve the fidelity and speed of early-stage content creation. We believe this represents a meaningful step forward for AI-driven development across the industry.

Unity’s role is to operationalize these advances. Outputs from world models are ingested into Unity’s real-time engine, where they are converted into structured, deterministic, and fully controllable simulations. Within Unity, creators define physics, gameplay logic, networking, monetization, and live-operations systems to ensure consistent behavior across devices and sessions.

This combination enables developers to move faster from concept to scalable product: AI accelerates environment and asset generation, while Unity provides the execution layer that transforms generated content into reliable, monetizable experiences.

As a result, world models expand content supply and reduce development friction, while Unity remains the system of record for runtime, distribution, and long-term operations. This dynamic broadens Unity’s addressable market and reinforces its central role in the interactive ecosystem.

[Tim Sweeney @TimSweeneyEpic]

Just announced at Unity’s Unite 2025 show in Barcelona: Unity has built an amazing new networking protocol enabling Unity games to come into Fortnite next year. This will enable an incredible variety of games to reach a new audience in new ways!

[Game From Scratch @gamefromscratch]

In perhaps the single biggest #gamedev news story of 2025...

At #Unite 2025 - Unity(@unity) and Epic Games(@UnrealEngine) have announced a partnership...

...and GameFromScratch may have actually started it! CRAZY!

https://t.co/pfQaZPwyap

#unrealEngine #unity3d

[Unity @unity]

Unity 🤝 Epic Games

Developers around the world will be able to bring their games to @Fortnite while Unity’s cross-platform commerce platform is coming to @UnrealEngine soon.

When ecosystems are open, everyone wins!

[Unreal Engine @UnrealEngine]

Unity 🤝 Epic Games

Epic and @Unity are working together to bring Unity games to Fortnite, and to bring Unity’s cross-platform commerce platform to Unreal Engine. Together with Unity, we’re working to advance the open, interoperable future of video games.

Check out more of the details here: https://t.co/4kkxDv6Dvm

[Lord Bebo @MyLordBebo]

Mirrors are a problem … remember that when you get one of these robots

[Peter A. Williams @paw9000]

I'm so pumped about this board game! Can't wait!
https://t.co/kq9E9pmfbb

[Peter A. Williams @paw9000]

@Fireproof_Games The puzzles on quest were great! Im sure the steamVR version will be a hit.

[Yawg @YawgGoth]

This goes unbelievably hard!

[Yohei Nishitsuji @YoheiNishitsuji]

#つぶやきGLSL "castle2castle" for(float i,e,g;i++<1e2;){vec3 p=vec3((FC.xy-r*.5)/r.y*g,g-3.5);p.zy*=rotate2D(t);for(int j;j++<6;)p*=rotate3D(1.57,vec3(0,2.*smoothstep(-1.,1.,cos(t))-1.,1)),p=abs(p+p)-1.;g+=e=(length(p.yzx)*5.-6.)/9e2;o+=exp(-e*1e6)/7e1;} https://t.co/mXj85FoF0H

[Highland Keep @HighlandKe26288]

Real-time voxelized lighting is here.
H-Trace WSGI now powers our custom nature renderer and terrain. Every tree is fully interactive—you can chop or destroy them, and the lighting updates instantly

[Samwise7RPG @Samwise7RPG]

#RollForInitiative

[Sandy Petersen 🪔 @SandyofCthulhu]

In Call of Cthulhu, no one wants the magic items. I am actually proud of that. In D&D, Gygax invented crocked magic items to give players pause. But in Call of Cthulhu, it's the working-as-designed items that are the most feared.