@Riko
on
Dream World
3h 51m 17s logged
Added WASD controls to my 3D world — now I can actually roam around and explore it!! 
Slowly will turn this little dream world into something real 👀
@Riko
on
Dream World
3h 21m 24s logged
First log of Dream World 
Started building Dream World while learning Three.js + React Three Fiber.
Got my first little 3D scene working — house, trees, random giant trees because why not lol. 
Still super early, but we’re cooking :’)
More to come.
Ship
What did you make?
Kobayashi OS — a web OS themed around Miss Kobayashi’s Dragon Maid.
I wanted to make one of the most feature-rich and polished web OS experiences possible, something that actually feels like you’re using a PC. And yeah, this is Kobayashi’s PC, so don’t be surprised if you find something interesting related to her.
The main thing I focused on was making everything feel connected, just like a real OS. Apps don’t just exist separately — Camera connects to Gallery and Files, downloads go into Files, Kanvas can save things to Files, widgets remember where you put them, and Kobayashi-chan can actually interact with the system.
Basically, it’s not just a collection of apps. It’s one big little OS.
What was challenging?
- Interconnecting all the apps and keeping everything persistent was definitely a challenge. I wanted things to behave like an actual OS instead of just being separate demos.
- Making the Kobayashi-chan AI work was one of the toughest hurdles. Getting tool calling, memory, emotions, and system interaction to work together took a lot of trial and error.
- Designing and building the widget system was another tough one. Making widgets draggable, positionable, persistent, and actually useful took quite a bit of work.
- Honestly, getting all the small details and polish right took way more time than I expected.
What am I proud of?
- First — Kobayashi-chan AI. This is probably my favorite part of the whole project. She has tool calling, memory, emotions, and can actually interact with the OS. I genuinely didn’t expect I would be able to make something like this. It’s basically a little Jarvis, but Kobayashi-chan.
- The piano. I spent way more time on this than I probably should have. Not building it — playing it. It’s such a stupidly fun little feature that I keep losing track of time playing on it.
- The overall polish. I’ve been working on this for so long that I’ve honestly lost count of all the little things I added. I designed the UI in Figma, made a lot of the icons myself, kept redesigning things, learned a ridiculous amount along the way, and kept adding small details until it finally started feeling like a real OS.
I’m genuinely proud of how it turned out.
There are a lot of things packed into this project, and I think the best way to understand the amount of work that went into it is to actually explore it yourself.
What should you know before testing?
- The project: https://kobayashi.cawai.site/
- Please explore the widgets. This is one of the parts I spent a lot of time on.
- Please try the piano. Seriously.
- On the first load, some images may take 1–2 seconds to appear. Give it a moment.
- Wallpaper customization, live wallpapers, and icon customization may also take a little time on the first load.
- There are a LOT of games: Thor, Spider-Man, Minecraft, etc. If you open one and see a black screen, don’t panic. Some of them just take a little while to load. Come on, we’re talking about Minecraft here. Give it some time.
- And obviously, click around. Open things. Break things. Try stuff. A lot of the fun is finding the little details hidden around the OS.
That’s Kobayashi OS.
I started with the idea of making a web OS, but somewhere along the way it turned into this huge little world with its own apps, games, music, memories, AI, and way too many tiny details.
Hope you have fun exploring it.
1h 53m 58s logged
Polished the UI of the widgets, improved wallpaper customization, refined the app UX, resized the apps, added a bunch of new features, and made countless small tweaks across the OS. 
A lot has gone into this project, and I really hope it becomes the star project considering how much time I’ve poured into it. 🥹
Still more to come!
1h 34m 16s logged
Kobayashi-chan is here!
Chat, open apps, change settings. She remembers, reacts, and doesn’t mind a little flirting. :)
Major changes!! 
A summary of everything I’ve done over the past 5 days.
Lots of design work too—especially Figma stuff. StarDance doesn’t log my Figma hours though… too bad. 
10h 0m 59s logged
Damnn!! Been a while haven’t posted anything bout my Work!!!!!! 
- added a piano
- added a lots of Fun games
- improved the architecture and UI/UX
- improved the response of the Kobai
- added Terminal and Code editor..
- added a proper and nice widget system
- changed the whole UI of my apps_ and more features are coming soon!!!!!
9h 16m 31s logged
Added a lots of appppss!!! embeded few games, hackclub and typingtest.com … and Yeah added my own built apps (Json Lab , DevScope, and MoneyTrail)
3h 12m 36s logged
Another day on Kobayashi OS. Damn, I really turned the AI Assistant into what I actually wanted it to be. And yeah, now the Shorts app isn’t just some mere app with a icon sitting there — it actually has Shorts embedded hehe. And yeah… there’s a Kanvas app now too lol.
9h 52m 52s logged
Damn !! Been a while !! 
Yup was working on the assistant.. yeah which actually works!!! changed the architecture of ai chatbot and yeah its much better now !! and Yeah some more tweaks ongoing 
1h 14m 59s logged
Making the UI of music player nicer .. 
3h 58m 49s logged
BIG ALERT IN KOBAYASHI OS 
I SUCCESSFULLY BUILT AN AI ASSISTANT FOR MY WEB OS! 🎉 
It can actually understand commands and interact with the OS — opening apps, handling actions, and more.Another huge step for Kobayashi OS. I’m learning a LOT about AI while building this, and it’s honestly crazy seeing everything come together.
5h 15m 38s logged
Worked on the adding more apps.. with functionality and zero css hehe 
but yeah add it later currently working on a ai chat box on my project apps
3h 27m 1s logged
Today was more focused on research and architecture than coding, but I still made some solid progress. I perfected the widgets, made the right-click menu fully functional, and built a basic music player that’s already working. I’ll be focusing on the CSS and visual polish for the music player tomorrow. Overall, another productive day on Kobayashi OS. 
3h 31m 19s logged
Spent some more time working on the Widgets section 👀
Made the widgets draggable and closable only when the widgets menu the widgets top bar is being displayed.Also fixed up some CSS issues, added a right-click context menu, and added an Open option. So far, only one widget is actually openable; the rest will come later 😅
That’s enough UI work for today though — my shoulders and back are officially protesting. 💀
More to come!
1h 54m 23s logged
Update
Made a few solid improvements to the widget experience:
- Widget positions are now stored globally and persisted in local storage, so the app restores exactly where you left it after a refresh.
- Tweaked the visuals for a cleaner, more polished look.
- Added resizable widgets for a more flexible, customizable layout.
Small changes, but they make the overall experience feel much smoother. More to come!
3h 29m 56s logged
A little update on the Widgets section
It’s already looking pretty cool , but I’m not quite done with it yet. 
There are still a few tweaks and some changes I want to make to how the widget system works under the hood. The goal is to make the whole experience feel cleaner, more flexible, and easier to build on as I keep adding more widgets.
For now, though… I’m pretty happy with how it’s coming together. 🚀More tweaks incoming. 
5h 49m 25s logged
Yahooooooo! Made some awesome progress! 
- Added the Widgets feature
- Added a toggle function to open/close the Widgets list
- Added a Calendar widget
- Added a Clock widget
- Added toggle functionality for opening and closing widgets
So happy to see it all coming together! 😄
🔥One step at a time, and the project is getting better and better! ✨ 💪
3h 34m 13s logged
Camera Improvements
Fixed a few bugs and made some nice improvements to the camera flow.
Now, the last captured photo is shown directly in the camera. Tap it, and the gallery opens with the image displayed at full width and height. From there, you can swipe through the rest of your photos.
Still have a few things I want to tweak in this flow, but the experience is already feeling much smoother.
Next up: widgets !!
7h 36m 42s logged
Been a while!
Added a working camera + gallery and implemented IndexedDB for storing captured photos.Honestly, the camera logic and IndexedDB were the biggest challenges since I knew nothing about them before this. Learned from internet resources, experimented, broke things, fixed them… and finally cracked it.
3h 30m 21s logged
I worked on improving the app bar behavior in Kobayashi OS. I added the Menu app icon to the apps bar whenever it’s opened, and also implemented position shifting for existing apps so they adjust automatically when a new app appears. Small interaction improvements, but they make the desktop feel more dynamic and consistent.
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