Claude Fable 5 crea Minecraft, Fortnite i GTA amb un sol prompt: què demostren els prototips
Tef posa a prova Claude Fable 5 amb tres encàrrecs de videojoc en un sol prompt. Els resultats són sorprenents com a prototips, però no equivalen a recrear jocs comercials complets.
Una de les demostracions més vistoses d’un model de programació és demanar-li un videojoc complet en una sola instrucció. Tef aplica aquesta prova a Claude Fable 5 amb tres referents molt coneguts: Minecraft, Fortnite i Grand Theft Auto. En cada cas deixa que el model generi el projecte sense correccions intermèdies i després executa el resultat.
Hi ha un matís en l’etiqueta «un sol prompt». Abans de l’execució, el creador demana al mateix Claude que ampliï la seva petició breu i després enganxa la versió detallada en una sessió nova. Per tant, el joc surt d’una única generació llarga, però el text final també l’ha preparat el model. La prova impressiona perquè Fable 5 transforma aquesta especificació en experiències interactives recognoscibles. Ara bé, «crear Minecraft» no vol dir reproduir el joc comercial, amb tot el seu contingut i la seva infraestructura. Són prototips compactes que imiten algunes mecàniques o una estètica.
Primera prova: un món de blocs inspirat en Minecraft
El primer encàrrec ocupa la part més llarga del vídeo. El model ha de construir una experiència de blocs tridimensional amb moviment, terreny i interacció, suficient perquè qualsevol espectador identifiqui la inspiració. Fable triga una mica més d’una hora i lliura un projecte anomenat VoxoCraft.
El prototip permet caminar, córrer, ajupir-se, trencar i col·locar blocs. Els materials apareixen a la mà, el vidre és transparent i el creador pot aixecar una cabana. Això mostra la capacitat del model per coordinar una escena gràfica, una càmera, entrades de teclat i ratolí, col·lisions i regles bàsiques de joc.
També apareix la distància respecte d’un producte acabat. Funciona com un mode creatiu elemental: els blocs trencats no deixen objectes i no hi ha portes, eines ni sistemes complexos. Tampoc s’avaluen persistència, accessibilitat, rendiment en altres dispositius o progressió. És una base exploratòria, no un substitut del desenvolupament i les proves.
Segona prova: combat i construcció a l’estil Fortnite
El segon prompt demana una experiència inspirada en Fortnite. Després d’aproximadament una hora, Fable lliura Skyfall Royale. El jugador entra amb un planador, troba armes, combat contra bots, construeix parets i ha de tenir en compte una tempesta que redueix la zona. Els bots també lluiten entre ells i la partida pot arribar a una pantalla de victòria.
En una prova així, el resultat més important no és la fidelitat al joc original. És la capacitat de coordinar mapa, perspectiva, enemics, controls, armes, inventari, construcció i regles de final de partida. Tef queda especialment sorprès pel terreny generat i pel fet que els sistemes funcionin plegats des de la primera execució.
L’experiment consumeix el límit de cinc hores del compte i el creador atribueix uns 18 dòlars de crèdits a aquesta generació, després d’haver recarregat el servei. No és un benchmark de preu reproduïble: el cost depèn de la plataforma, la modalitat «Ultra Code», la llargada del prompt i les tarifes del moment.
Tercera prova: una ciutat inspirada en GTA
L’últim experiment intenta condensar una experiència de món obert inspirada en GTA: San Andreas. Després d’una hora, el model genera un mapa extens amb edificis, arbres, ombres i un personatge que pot caminar i córrer. Tef destaca la fluïdesa del moviment a la seva màquina.
El model del jugador és el component visual més feble, tant aquí com a Skyfall Royale, i el creador explica que el límit de crèdits impedeix estendre la generació. Aquest és probablement el contrast més gran entre prototip i videojoc comercial. Un GTA real integra narrativa, física, multitud de personatges, vehicles, animacions, so i anys de treball. El resultat de Fable 5 és una maqueta interactiva.
La demostració també suggereix una aplicació pràctica: provar ràpidament si una mecànica és divertida o si una direcció visual comunica bé la idea abans d’invertir en una arquitectura definitiva.
Què aporta Fable 5 a la programació assistida
Els tres exemples comparteixen un patró. El model no es limita a completar una funció aïllada; planifica una aplicació petita, crea fitxers, connecta una llibreria gràfica i lliura alguna cosa executable. Això redueix molt el temps entre la idea i la primera prova.
Per a un desenvolupador, aquesta velocitat pot servir per preparar demostracions, material educatiu, eines internes o variants d’una interfície. També facilita que una persona no especialitzada descrigui una mecànica i la pugui discutir sobre un artefacte visible.
La velocitat no garanteix qualitat interna. El codi pot contenir duplicacions, dependències poc adequades, errors de seguretat o decisions difícils d’ampliar. Per convertir un prototip en programari fiable encara cal inspeccionar l’estructura, afegir proves i mesurar rendiment.
Els límits de la prova d’un sol prompt
Una demostració seleccionada no informa de quants intents fallen ni de la consistència entre execucions. Tampoc comprova manteniment a llarg termini, treball en equip, compatibilitat mòbil o comportament sota càrrega. Un resultat visualment convincent pot amagar errors que només apareixen després d’uns minuts.
També cal evitar confondre inspiració amb reproducció. Els noms Minecraft, Fortnite i GTA serveixen com a drecera perquè el model entengui un conjunt de convencions. Publicar un producte basat massa directament en marques, art o actius aliens plantejaria qüestions de propietat intel·lectual que la prova no aborda.
En un flux professional, el prompt inicial hauria d’anar seguit d’una revisió del codi, una llista de requisits, proves automàtiques i validació humana. La IA pot generar el primer 60% molt de pressa; els casos límit i la qualitat del darrer tram continuen sent feina d’enginyeria.
El context actual de Claude Fable 5
El vídeo es va publicar l’11 de juny de 2026. L’endemà, Anthropic va suspendre temporalment l’accés a Fable 5 mentre revisava qüestions relacionades amb controls d’exportació. Segons l’actualització oficial de l’empresa, el model es va tornar a desplegar i l’accés es va restaurar l’1 de juliol. Aquesta cronologia és important perquè la disponibilitat va canviar després de la gravació.
Anthropic també ha publicat una targeta de sistema conjunta per a Fable 5 i Mythos 5. Aquest document descriu avaluacions, capacitats i riscos; és una font més adequada que una sola demostració per valorar el model en termes generals.
La prova de Tef no demostra que els desenvolupadors de videojocs deixin de ser necessaris. Demostra una altra cosa: un model pot convertir una idea en una maqueta jugable amb una rapidesa excepcional. Això canvia el cost del prototipatge, però no elimina el disseny, l’art, la seguretat, l’optimització ni les decisions humanes que converteixen una maqueta en un joc.
Contrast i context
Fonts consultades
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Anthropic Redeploying Fable 5
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Font de treball
Transcripció amb marques de temps
Consulta la transcripció
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0:00
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This has got to be the most requested video I've ever gotten. CloudFable 5 just dropped and apparently it can make games in one prompt. This has got to be the most glazed AI model I've ever seen today. I behind Cloud4.8. People are saying CloudFable 5 puts every other AI2 shame. So in today's video we'll be testing that and we're gonna see if CloudFable 5 can make Minecraft or Night and GTA in one prompt. And first I think we should start with the simplest one, which is Minecraft. So we have CloudFable people fire right here on ultra code setting. This is to the max. So you know what's about to use all of my money and we're gonna tell it. And yes, this is this is how I'm gonna send it if it actually recraced Minecraft in the bottom to the top Is there any point in using any other AI at this point now I will tell it to make this prom better, but I truly don't even think in these that it'll just make the prom itself and re-enter it But we will now send it this is the Claude Fable 5 test now Claude has been doing crazy things here are the benchmarks for Fable 5 compared to the other AI This is just crazy this like the claims are saying really sounds unreal to me. That's why we're testing in this
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0:52
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video because I kind of don't believe it, but I kind of do like claw that's been going crazy. So it's rewriting the pump right now that actually took barely fast. I thought Fable 5 was gonna take longer to think, but it honestly took the same amount of time like going when they would make a pump. So I just checked over the prompt and it doesn't look terrible. It would be making a technical version of Minecraft. I literally wanted to look exactly minecraft. So I'm gonna specify that when I paste it in. So now here's the revised prompt. So it's gonna make its own pixel art and literally make its own graphics and all that. And when I told it to make it play exactly like Minecraft, I didn't expect this. This thing is doing measurements to the walking speed, sprint speed, and the exact eye height of...
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1:44
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The Minecraft layer. I've never seen AI do this before. So let's copy this prompt and let's send it back into itself I guess. Let's put it on Ultra Code. So that way we get the best results. I'm not gonna lie. I'm kind of suspecting that it's gonna run all my credits, but I should run this brown. We're about that stuff later. I've been hearing already that Fable 5 can recreate Minecraft. I'm complete nothing, but if I don't see Minecraft on my screen, bro, we're refuting all those claims. Yeah, who knows how long this will truly take on Ultra Code and everything? Yeah, I'll come back when there's something new or it creates Minecraft so let's see what fate will 5 can do. It has been an hour and some change. Lot is finally done and bro. It gaping this screenshot I couldn't believe it. This looks exactly like Minecraft but enough talking is going play this. Alright here it is. It's called VoxoCraft and just look look at the textures. It generated all of this from zero from nothing. Alright let's click to play. Oh my god. It feels just like Minecraft too. The controls obviously work. It made the grass out.
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2:37
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I'm actually tweaking out. Oh my god. In one problem I do. We actually can see the blocks in our hands. The glass looks like glass. We can crouch. Wait, but can we run though? Yes, we can't that's a slight zoom animation too the sky looks pretty Minecraft like we break things Can we break this tree? Oh my god, we can break the tree look at this didn't drop anything though every in creative mode. Oh my god. We are in creative mode. It made Minecraft from one prompt. He really did it I can't believe this. Okay, so guys. I'm not gonna lie. It's time to wrap up every other AI as I said bro I put all my best on cloud since the beginning bro look at this Fable 5 and this is just what consumers can use right now imagine like what they're actually building behind closed doors. This is crazy. That's built like a little house. We're literally building a house in our Minecraft clone. When I tell you this is crazy like dog, this is crazy. Oh, this is my little hut. Wait, let's add the windows. So I don't add the windows right here. Look at my little house man. I didn't add like every material. I told just to make the basics of Minecraft and it adds his blocks by itself. I can't put it like a door down or anything or build tools. Bro, to make this in an hour. Do you know how much years it took them to develop Minecraft and we just
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3:29
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This hat down on our butts and typed in a prompt that took like a few seconds and it made this itself in like an hour I cannot believe this this is like actually mind boggling I don't even know what the title of this video brought like I'm like genly's to surprise like yeah, here's our complete little hut our little Minecraft hut thing is unreal It just made Minecraft obviously this is the best Minecraft ever made in any video. Make a chat to be a T&G M and I look like Toys, bro. This is the real big dog now. I don't even know if we can make our AI challenge videos because Claude is gonna win every time. Look at this, what the heck? Now we are gonna tell Faber 5 to make Fortnite from scratch. I don't know if it will be able to do this because Fortnite is way more graphically intense game, but really about to see when we tell it to make GTA from scratch, because bro. If we can make GTA from scratch.
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4:22
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Then GTA 6 is dropping soon. I listen to it on ultra code as well. I'm telling it's a make for night from Goli Zero and to improve this prompts so we could paste it back in. I'm very excited to see if it could make work nights from scratch. That's gonna be crazy. Minecraft okay, that's understandable. I've seen that's still crazy obviously. Before night, bro. That's literally that requires a game engine. It's gonna make a game engine from scratch. Anyways, I'll come back when this is done thinking and it gives us something. Oh my goodness, it's finally done. I'm not gonna lie. I literally used up all of my credits so I literally had to pay $50 for to make this Fortnite clone game. So please
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5:14
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Just like the video for me because I did all this in name of science. We had to see it. It made skyfall royale. We gave me some instructions to run it. So let's go do that. I thought my terminal and like run a python prompt. So good work. Well, right here it is. Skyfall royale 20 drop in one workout. So let's go drop in and let's press paste the job. Look at the map though. Oh my god. Oh, here's my glider. Okay. What the heck? This is the best for night clone. We've got it. Okay. We have our pickaxe in our hand. I see some guns and stuff. Also see some bots walking in being some Matt's games a match. I just start cranking 90s. Like I right there is shooting Let's try to pick up this sniper here. He temp is AR sniper and Lyama the track is guy. I missed reloading command. Yo I'm actually terrible. I'll just use our AR. These just build a wall. Yeah, I could build oh my goodness. Alright, we got this guy. Who was he shooting at this guy right here? I got that Lyama Boom got him. Alright, let's start building a bit some walls right here. You know what I mean? I'm not gonna lie I lost my skill of cranking 90s and for night like
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6:06
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3 years ago, bro. I'm just amazed at what Fable could do. We really built a Fortnite S game. Look at the map, by the way. It generates all this. How did it generate this map? Bro, who is this? It should be one shot, right? Yes it is. You know, it's crazy. The storm is also shrinking, bro. You know, I really like the AI are fighting each other. So it's really, oh my god. This guy almost killed me. Oh, I won. Okay, he was a last guy. This was really good. I'm not good. I this was really good. But still pointy using any other area at this point. I mean like as you can see right here my five hour limit was up and they literally use $18 to make this Fortnite game. Well now the last thing we really need to do is to make GTA from scratch. Let's see how far our fable could really go. Let's put this back to Ultra Code and outfable 5. Alright, so I just sent a prompt and I told it also to not go over my credits because I do not have enough bread to keep pouring into this video.
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6:59
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to see if it can make G-Ta from scratch so we will be doing it in this video. Yeah I'm gonna come back when this is done so far has been doing a very good job. I'm just bewildered like it really made some really good games in an hour. Okay and hour later, Vable 5 is finally done and here is GTA San Address clone. Now I wanted to be known that I could have gone even further but it literally couldn't because um my Limits made a, it made a world that's definitely for sure made a massive world at that and everything was meticulously placed you know I mean it just looks very nice looking the trees over there like it literally made this only things that I didn't make that well in the Fortnite and this one is
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7:51
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the player model. It could definitely use a bit of work. To make this an hour is definitely impressive. Everything is super smooth, like the gameplay controls everything, the shadows, how it fills on my computer, fills very smooth. I can even sprint this crazy. If you were to build this even farther, you can probably make a pretty stacked game. Yeah, this is pretty much what Fable 5 has to offer, and I'm here for it, but making all these games within an hour is definitely a crazy thing to think about. You get 10 years ago, this was not possible at all. It would probably take you a month to get to this Yeah, let me know in the comments what you think about Fable 5 and what videos we should do with Fable 5 because this is just super interesting bro like this is awesome the Fable 5 definitely went crazy when it came to making Minecraft that was definitely my favorite part Yeah, that pretty much concludes it. I'll see you guys in the next video. This was crazy
