Sora Kalden — Arcade

1UP SORA STAGE
INSERT COIN — CREDITS 01
★ POLYMATH QUEST ★

I build apps and businesses, write worlds, run games, and learn hard things in 30-day sprints — and I'm looking for talented, curious people to make the next ones with.

Here are a few of mine. Press start, pick a stage, and let's build the next one together.

NEW GAME · BUILDING
NEW GAME · STAGE 1

THE MAKER

Apps, ~160 ideas, and the one move underneath all of them: find the right thing to build, then build the honest version. The domains change; the method doesn't.

~160 ideas and counting — and the ones that ship.

► BOSS — FLUA

Flua language-learning app — a deck of vocabulary cards laid out as a study sheet. Flua — a single spaced-repetition card with native audio.
FLUA
The fastest honest path to a new language: one expertly-ordered deck, real native audio, and spaced repetition that does the thinking for you. He taught himself Japanese to A1 in ~20 focused hours with the method, then spent a year building the app that strips out every ounce of the friction that makes people quit.
POWER-UP ▸ tryflua.com ↗

► PARTY MEMBERS

Weave — a minimalist weight-and-habit tracker showing a trend graph.
WEAVE
A minimalist weight-and-habit tracker built so the graph does the nagging. His mom lost 17 lbs with it.
Super Zen — a focus and calm tool.
SUPER ZEN
A focus / calm tool — the small, well-made kind of app he likes to ship.
SMALL TOOLS
A metronome that actually feels good; a tool to find the episode where a show finally gets good.
THE IDEA ENGINE
~160 catalogued app, game, business, book and product ideas — each ranked, named and MVP-scoped (roughly 28 are games) — and a habit of turning the best ones into real, shipped things. Grab one off the shelf and build it with me.
MORE APPS ▸ kalden.me ↗
★ SECRET ★
"The domains change. The method doesn't."
— from the notes
STAGE 2 · WORLDS & STORIES
STAGE · STAGE 2

WORLDS & STORIES

He's built worlds since he was 11.

A fantasy novel he faked his way into finishing and published at 14, a 150k-word dark epic in progress (The Swords of Darkness), a homebrew D&D world with its own playbook, and a manga he still wants to make.

A hand-built D&D world map, inked by hand.
THE HOMEBREW
A homebrew D&D world with its own playbook and hand-built maps.
A second hand-built D&D region map.
THE SWORDS OF DARKNESS
A 150k-word dark epic, in progress.
★ SECRET — ON THE TEEN NOVEL ★
"Because I had to fake progress, I accidentally built a real habit. It makes me wonder how many things we could actually finish if we just tricked ourselves into starting."
— on the teen novel
STAGE 3 · LEARNING & TEACHING
STAGE · STAGE 3

LEARNING & TEACHING

How he learns anything fast, and why he's building the courses he wishes someone had taught him.

Math, statistical and computational thinking, built for real understanding instead of the exam.

▶ HOW TO PLAY — SPEEDRUN RULES (THE 30-DAY SPRINT)

Pick a skill, go all-in for 30 days. Japanese to A1 in ~20 focused hours. Tone-deaf to singing from memory in a month. Badminton, YouTube, shipping. The trick isn't grinding harder — it's refusing to start until he's found where the common advice is wrong, then building the shortest honest path and letting sleep do the heavy lifting.

★ SECRET — ABOUT ME ★
"Being called smart my whole childhood made it part of my identity — and I was more afraid to lose that title than I was to fail a class."
— About Me
STAGE 4 · GAMES & THE TABLE
STAGE · STAGE 4

GAMES & THE TABLE

Take a system apart, find the fun, build it back better.

A Balatro-inspired dice roguelike in design, a board game in progress, and D&D run as systems.

★ SECRET — FROM THE CONSUMABLES ESSAY ★
"Any time the best strategy isn't the most fun strategy is, I believe, a failure of the game's design."
— from my consumables essay
STAGE 5 · THE MODERN BARD
STAGE · STAGE 5

THE MODERN BARD

Singing, standup, improv, voice acting, speaking — the half of himself he rebuilt on purpose.

Charisma treated as a built skill, not a gift you're handed.

★ SECRET — HOW I BECAME SUPERHUMAN IN 2 YEARS ★
"I could not sing. I could not dress well. I was not particularly fit or especially charismatic. I was a very well-compensated specialist with a B-minus in everything else."
— how I became superhuman in 2 years
IDLE / OFF-DUTY

And some things I do purely for myself — painting like no one will ever see it, building and painting Gundam kits, singing in the mornings, the occasional cosplay. No goal. Just the doing.

STAGE 6 · PHOTO MODE
PHOTO MODE · STAGE 6

PHOTOGRAPHY & THE EYE

One camera, a single 23mm prime, golden hour.

He shoots portraits, fits, and the cities he lives in — and it's the visual half of the same brain that obsesses over color grading and type.

★ SECRET — ON COLOR ★
"You can't study the color wheel for two hours and understand it. You have to train your eye over a long time."
— on color

▶ Open the full PHOTO GALLERY stage to walk the wall.

STAGE 7 · THE ATHLETE
STAGE · STAGE 7

THE ATHLETE

The same engine he points at apps, pointed at his own body.

And the sports — soccer, badminton, volleyball — that are how he makes friends in a new city.

★ SECRET — SOCCER TRAINING NOTES ★
"Prioritize control and intention over speed."
— his own soccer training notes
STAGE 8 · THE MIND
STAGE · STAGE 8

THE MIND

A reading life run like a syllabus — philosophy, history, business.

All read through one lens: read to build, not to collect.

★ SECRET — FROM THE NOTES ★
"Everything is interconnected. Singing makes you a better speaker; games train you to perform under pressure. Each skill feeds the next. If you want to be truly unstoppable, learn everything."
— from the notes
CONTINUE? · THINGS I HAVEN'T BUILT YET
LOCKED · CONTINUE?

DREAMS

Things I haven't built yet. Locked levels — coming soon.

🔒 LOCKED
Write a TV show
He's watched thousands of hours of film and anime, only the best, mostly to take apart why they work.
🔒 LOCKED
Finish the manga
The "next Death Note or Game of Thrones": a complex plot that's somehow easy to follow.
🔒 LOCKED
Make Westworld real
As a game you can actually live inside.
🔒 LOCKED
Open a café
A third place for serious makers — writers, artists, builders, one room.
🔒 LOCKED
Find the people
The talented, curious people he'd do all of the above with.
STORY LOG · CODEX
STORY LOG · § CODEX

STORY CODEX

Distinct from the work — ideas, not portfolio.

SAVE 01
How I Learn Anything in 30 Days
Not willpower — a method: find where the common advice is wrong, build a feedback loop, and let sleep do the heavy lifting.
SAVE 02
The year I walked away from $250k
At my financial peak I was lonelier than I'd ever been — so I quit, lost almost everything, and spent a year figuring out what a life is for.
SAVE 03
What Actually Makes D&D Peak
After 100+ hours behind the screen, the magic isn't the dice or the lore — it's a handful of frameworks for a world that's already moving when players walk in.
SAVE 04
Why the best schools taught me to forget
I optimized for the grade at every school I attended, and it worked — which is exactly the problem.
SAVE 05
I Used My CS Degree to Debug My Weight Loss
I'd done everything right for six months and the scale wouldn't move — until I stopped treating it like willpower and started treating it like a bug.
2P JOIN · LET'S BUILD SOMETHING
PRESS START · 2P JOIN

2P — PRESS START

I'm looking for people who are excellent at something and curious about everything.

Collaborators, co-conspirators, friends. If any of these worlds is also yours — or you just want to scheme — say hi. The best things in my life started as a five-hour first conversation with a stranger.

© 2026 SORA KALDEN · 1 PLAYER
SORA KALDEN IS THE NAME I GO BY. LEGALLY, SWARNIM KALBANDE.
[email protected]
© 2026 SORA KALDEN · SORA KALDEN IS THE NAME I GO BY · LEGALLY SWARNIM KALBANDE
[email protected]
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