Claude Opus 5.5 built a full open world game that runs in your browser zero assets. terrain, creatures, boss fight, animations, sound, music. all code it even cut this trailer and made the soundtrack (cover is image generated) play it:

btw the lag in the video is my laptop, not the game. slow igpu + screen recording at the same time

right?

How expensive and time-intensive it was? looks beautiful

16h, two prompts. (it stopped 3 times because of the 5h limit)

@Oskar0084 Was this on the 20$ plan ?

@Oskar0084 brother the plans are not THAT subsidized

@Oskar0084 Yeah that's, what i thought so it's the 100$ plan or the 200 one ?

@Oskar0084 200

Okay

wdym okay 😭

@TokenGremlin Dude this is incredible. How long did it take?

@TokenGremlin about 16h for everything!

@TokenGremlin Damn. Very good stuff

holy smokes dude thats crazy

tyty

A few more things Opus created A map, menu, start story,... fight animations below in one video and in the other a bossfight

I'm playing right now. This is crazy! Loving it!

i played it for like an hour, first AI game I made that I played for such a long time

It's legit good! Perfect lil game to play for some downtime.

I will be no hitting this as soon as possible

wtf this is the most imperssive game i've ever seen!!!

thanks a lot! opus cooked hard

Loved it broski

This is incredible ! How could he make the music himself? Can you share more technical details Prompt etc

will share the two prompts probably tomorrow and opensource everything!

OMGGG

told you hahah

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😂

incredible

very impressive - wow

looks fucking amazing

insane bro

crazy

Why tf is now Opus the sota my mind cant comprehend this anymore wdym Astra was released 20 days ago and now anthropics mid-class model is the best? Like come on the Singularity is wild friends

my laptop crashed wadahelly you cooked harderrrr

windows probably? same as me?🙏🏻😭

yeaaah same pain

very cool!

man that's something else and it blows my mind when you think this is the worst it will ever be

impressive!! am trying to make something similar opus 5.5 is really good tbh!! it's just too good in threejs.. we need a native threejs implementation that models are good at! then we can ship it to all platforms w good performance

Now I wanna spend my weekend there... You cooked on this one Leon (or...Opus?)

what?! THIS IS INSANELY GOOD?!

insane

wtfffffffff

Full open world game in a browser is not a flex, it's a statement of a new era. 🎮 My is also browser game 🙂

zero assets is the flex. how much of the combat actually held up when you played it?

Damn that’s crazy

Bro,imagine the next mythos class model

generative audio direction and trailer edit in one shot is the part that's not predictable yet

Opened Arkenfall but have not hit the boss yet. There's some real satisfying about the traversing the world and the combat is solid for a browser game.

Insane. Did you use a gauntlet loop for this?

nope

nice work