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Made a 3D volleyball game using Claude Opus 5.5. It runs in the browser, no download, no sign-up.
You and a bot team against another bot team, from 2v2 on the beach to 6v6 in a packed arena.
Play:
volleyball-zeta.vercel.app/
Claude artifact:
claude.ai/artifact/NrALsZ2Xn…
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3rd place. Wild that it landed out of 70+ games.
Appreciate the shout @flaunchgg 🫡
The Game Mode Hackathon 2026 winners have been selected! 🥁
In the end over 70 (!) games were developed and submitted to Flaunch. 5 prizes were available.
Here are your winners...
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Kai retweeted
We will absolutely do a physical print of AZUKI manga after the first volume.
AZUKI, a new original manga series created by Arnold Tsang (@steamboy33) releases this September on azuki.com
Kai retweeted
My dream game would basically be OpenAI taking the kind of agent/simulation stuff they were experimenting with before modern LLMs and actually turning it into a real game.
You start a new world with a population on an island or in a city, and from that point on basically nothing is scripted. Every single person is controlled by their own 5.6 Luna instance, with their own memory, personality, needs, goals, plans, relationships, inventory, money, beliefs and ideas.
They have to actually live. Find jobs, earn money, buy food, get housing, start companies, trade, farm, invest, make friends, compete, commit crimes, buy property, build things, organize with other people, whatever they decide makes sense.
And the society itself is emergent too. There doesn't have to be a government, currency, police, laws or even private property at the start. The agents can invent those things themselves, agree on rules, vote, create institutions, form political groups, build a justice system, overthrow it all again, or just live in complete anarchy.
The game engine handles the actual world and ground truth, physics, resources, money, ownership, construction, combat, inventories, etc., while the Luna agents decide what they want, communicate with each other and make plans.
So every new world becomes its own completely unpredictable civilization and story.
Someone should release something like this as a game.
Built a world using Claude Opus 5, you can walk around in, out of the free @threejsassets packs.
You start in farmland, on a lane with fields either side. Keep heading east and the lane becomes a street, the buildings climb until you're standing under towers, and past the far edge of the city it gives way to desert and an oasis town.
There's a railway through the middle of it. The train works the whole line, and the crossings make you wait for it.
Give it a few minutes and the sun goes down. The street lamps come on and the place looks nothing like it did in the morning.
Works on a phone too.
Walk it: low-polyworld.vercel.app
We're starting to leave the territory where you'd test an LLM by e.g. "create an svg of pelican on a bicycle". As one idea to generalize it, I was interested what Opus 5 would do if I gave it the first paragraph of the Lord of the Rings, a 1M token budget (~$10) and asked for three js render of it. Opus went off for ~2 hours and wrote 5500 lines of code that (procedurally) rendered the story. It's kind of janky but fun. But it's a bit mindboggling that the LLM has to place and orchestrate various polygon assets in (x,y,z) coordinates and write code that animates it all, and that it even does anything at all.
I also like this kind of examples because no one in their right mind would ever spend the time to write something this custom but LLMs have all the stamina and patience in the world, so it's an example where we go from "no one would ever do this" to "sure, why not, it's ~free". There might be a lot more. But I'm excited about creating hyper custom worlds that you can imagine dropping players into, e.g. here to participate in the LoTR story as a spectator NPC, or one of the characters, or etc. Something like an ephemeral GTA of X on demand.
Last thought is that the domain of worlds/games exposes a weakness in LLMs: they can't easily audit their work because they aren't able to efficiently and natively perceive videos or play games within them. Here, Opus 5 had to very slowly and painstakingly take screenshots at different points, and it messed up a few times and created a bunch of jank. An example of raw capability (multimodal, gameplay) that I think is still quite lacking.
I tried building a snowboarding game with Opus 5.
Opus 5 wrote the rider, the snow, texture and every sound as code.
Have a go: snowboard-beige.vercel.app
Online multiplayer is live.
Race nine other riders down the same mountain, or open a private room and send friends the code.
Try it:
alpinesnow.fun
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Online multiplayer is live.
Race nine other riders down the same mountain, or open a private room and send friends the code.
Try it:
alpinesnow.fun
I tried building a snowboarding game with Opus 5.
Opus 5 wrote the rider, the snow, texture and every sound as code.
Have a go: snowboard-beige.vercel.app
adding multiplayer online and migrate new domain, it's good idea i think 🤔
I tried building a snowboarding game with Opus 5.
Opus 5 wrote the rider, the snow, texture and every sound as code.
Have a go: snowboard-beige.vercel.app
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Kai retweeted
Missed out on AX? We saved something for you!
One winner gets an original @steamboy33 Zero sketch
Kai retweeted
Man I'm going to miss those sunglasses @oakleymeta #UFC329