The reason game demos are actually a pretty good benchmark for the quality of AI models is because games are basically world models. Sometimes they model the real world. Sometimes they model an imaginary one. But either way, you're building a world with rules, objects, physics, interactions, and consequences. So if an AI gets better at understanding how the world works, it shouldn't really be surprising that it also gets dramatically better at modeling worlds in code. And that's exactly what we're seeing. This Spider-Man demo is honestly the most impressive open world I've ever seen AI build. Something like this would have been UNIMAGINABLE a year ago. People hating on this is pure unadulterated cope. If someone can build something like this in a week, what can an experienced indie developer build in a month? A year? People get mad when I say gaming is solved, but I don't care. I think people misunderstand what I mean by that. It doesn't mean you can open Opus, type "build me a game," and 20 minutes later you have GTA 7. That's not the point. The point is that we now have the tools to build basically anything we want. Getting the finer details right still takes time. Polish takes time. Good physics, mechanics, level design, art direction, storytelling, and making something genuinely fun all take work. But the actual ability to build these things is increasingly accessible to normal people. You don't need a billion-dollar studio just to have access to the technical capability anymore. You need a $200 Anthropic or OpenAI subscription, good taste, good communication skills, and the willingness to iterate. That's why I think people looking at this entirely through the lens of "AI is going to destroy game development" are missing half the story. This technology empowers creatives in a way we've never really had before. Regular people can build, experiment, and iterate at a speed that would have sounded ridiculous a few years ago. If you're an EA or Epic Games executive, maybe that's something to worry about. But if you're a passionate developer with a fun idea? This is magic.

Yesterday, my boys and I vibe coded a game together. They tell me what they want in their game and I prompt it into Opus 5.5 to build it. And of course they picked "Zelda Breath of the Wild" inspired game, where they can explore an open world, do dungeon puzzles, fight mini bosses and a final boss. The twist is that the hero holds a giant paintbrush as a weapon, each color had a different attack and effect (red = fire, blue = ice, yellow = bounce, green = vines). And oh they also wanted to fly on the paintbrush. We spent our whole saturday playing and iterating on the game. It was great fun. I told them, the future is all about Imagination, whatever they can imagine, it will be manifested in a digital experience. At the end of the day, the game had: - 2 biomes (1 island and a bunch of floating islands) - Paintbrush-based combat (4 colors representing different effects and mechanics) - 3 dungeons with puzzles - An undeground cave - Unlockable flying paintbrush when you activate 4 crystals around the island - 30+ enemies and elites - 1 giant boss As you can see in the gameplaye video below, its not the most polished video game but it's so satisfying to see my boys getting bewildered when whatever they asked for, the game is built before their eyes. Of all the games I have vibe coded so far, this was the most satisfying because my boys were actively co-creating it and playing it. This is definitely not the last game we're making together, they have already started brainstorming their next game, hint: "Peak with grappling hooks and TNTs." You can play the game here, works only on desktop:

On cloning games: It's a good eval for frontier models, since they still fail at getting the small details that make games great. Games are also very detail-dense, so models that fail to carefully inspect video will miss key mechanics. It is not meant to replace or degrade the original game. On vibe coding games: To get a picture of your family, you used to have to pay a painter to carefully paint you on a canvas while you all stood still. Then photography replaced that, and with digital photography and smartphones, anybody can immediately have a high-quality picture of anything. That doesn't mean there's not professional photographers; it's just not needed to get a picture. I think we'll see a similar trend in video games. Back to cloning: Using AI to clone a game is different than just taking a picture of an artwork because, right now, it's used as an evaluation. It doesn't produce a perfect replication, and it's useful for finding the differences between the best models and the best of the best models. If and when it's easy to instantly and perfectly replicate the game, there will be no further point in the test. Cloning a game will then be like screenshotting someone's artwork to hang on the wall. But we're not there yet. And when I clone a game, it's not so I can play it instead of the original. (I'm not a gamer anyway.)

Third iteration with Opus 5.5 medium. I am in awe. It turned blender, image-gen, and three.js into this beauty, which runs on your browser. An understatement to say that Anthropic cooked. You are looking at the future of game dev.

3.5k followers. wasn't going to post about this but i was stuck at 3k for what felt like forever. so i'm really happy and grateful. thank you for engaging with my posts and putting up with the voices 🙏

You know something crazy is going to happen when OpenAI goes silent, and Anthropic starts providing the best model, banked resets, and post-limit session usage. Claude is unbelievably good right now, but let’s not forget it has fumbled many times before. This could very easily flip after DevDay too, so keep that in mind before committing to any big subscription.

If you’re making 3D games with AI, you need even better hardware. I’ve got multiple subagents building components in threejs and blender, and other subagents are verifying them by rendering stuff in parallel. My laptop is being bottlenecked more than the tokens. To solve it, Claude created a subagent GPU and memory task allocator queue, where agents submit requests, and it handles the process without running out of memory and crashing the agent itself. This is the kind of natural evolution I would expect towards a game gen harness.

Opus 5.5 medium, a few iterations later. We got symbiote suit, better animations and models, and gameplay mechanics. City overhaul is still work in progress. Again, made from scratch in three.js and blender.

Twitter said I post copied content and do inauthentic spam posts. I almost didn't want to continue making AI game videos, but to hell with it. Here's 3 mins of a Three.js game I have been making with Opus 5.5 Medium. Every 3D model, texture, and animation is made from scratch.

I gave ChatGPT Real-time Voice a face, a body, and a personality. A 3D persona that talks to you and lives right on your desktop. OpenAI, this is what Codex Pets could become.