I used Opus 5 with the Unity CLI and Gauntlet Loop to see how well it could build games within Unity. While reviews are mixed on Opus 5 for coding and tasks in general - I think it's a huge unlock for gamedevs. It's understanding of 3D space +... ability to self critique is actually one of the most important breakthroughs. 00:00 Intro 02:55 Unity CLI 04:38 Spriterrific 06:40 Unity + Opus 5 08:20 Gauntlet Loop 09:38 Demo 12:21 Wrap Upshow more

GM looks good

thank you!

Gamibase be be out soon and it would be fun to see what it can do when using it with Unity CLI...

Thx I needed this

Anytime Tristan!!

I tried unity cli and opus 5 ultracode in 2 projects, and in both the 3d generated worlds where poor and un textured well. Are you using the mcp to generate the 3d world or any external assets? As in your example the scene looks beautifuly put together.

Does the CLI need to be granted access or anyone can do it now?

Available for free for everyone

does the gauntlet loop catch unity compile errors on its own?

Yeah seemed to because of the unity cli

Thats a really good foundation

I love seeing these videos because I can’t help but think what this all looks like a few months from now, then a year, etc. very cool!

Yeah it’s progressing really fast! Really exciting times

very useful video. Thanks, bro.

Appreciate the comment ! thank u

What do you think of Unreal’s native MCP

Not used it but i heard the tool calling is quite verbose and slow. Would love an unreal CLI or something

the interesting failure in that loop is playtesting. an agent can build and compile and still have no idea the jump feels wrong, so whatever stands in for a player is the entire experiment. compiling was never the bottleneck.

What is gauntlet loop where can I learn more

can Spriterrific create combined 90 and 45 degree facing sprites or is it 90 degree facings only?

How many hours / days / weeks / months did you put into this?

6 hours for the loop that ran. First one was maybe an afternoon of prompting

Do unreal engine instead

How effective is the Gauntlet loop in Unity?... From your video towards the end I can see it actually did try in making some nice visuals using just primitive shapes

Worked really well imo

Now THIS is the Opus 5 game dev stuff I want to see. Throw it into Unity, give it tools, make it iterate and see what breaks. Way more useful than another one-shot browser game.

Nice village mate!

Cheers !

How does it handle unity scene files with all its gibberish?

With the unity cli and it being able to handle the editor - works pretty well

Nice! I'll take a look! Your game looks great

Was it expensive to make? How much usage of tools did it take?

Hi Chong I like your content very much. Glad to be connected.Maybe you should also try , I am using Cindy+Godot combination working on my first Vibe coding game

This kind of AI + Unity workflow is getting scarily effective. Great breakdown.