Climb your luck.

About

SADARI is a free online ladder game (Amidakuji / Ghost Leg) and all-in-one random picker that anyone can use. No install, no sign-up — it runs right in your web browser.

Our purpose

We make group decisions fair and fun: things that classic ladder games handled poorly, like forming teams for large groups and automatically splitting a shared bill (Dutch pay), plus everyday random choices.

Features

🪜 Ladder game — up to 50 players, adjustable complexity, diagonal rungs, animation, Win/Lose · team formation · money distribution
🎡 Roulette · 🎫 Draw lots · 🪙 Coin flip · 🎲 Dice · 💺 Seating · ⏱️ Timer
Share results via link, KakaoTalk, text, or image
9 languages: Korean, English, Japanese, Chinese, Spanish, German, French, Russian, Portuguese
Dark/Light mode, sound effects, background music, bulk-paste names, saved rosters

Original content

Beyond the tool, SADARI writes and publishes original editorial articles about the ladder game itself: its 700-year history (Muromachi-era Amidakuji), the math that makes it always fair (permutations and one-to-one correspondence), a comparison of fair drawing methods, and practical uses. Read them in our articles.

Who runs it & our principles

SADARI is an independent web service, designed, built and operated by a solo developer, launched in 2026. We follow these principles:

Free, no install, no sign-up — every feature is available without an account.
Minimal data collection — the names you enter stay on your device (browser) and are never sent to our server unless you explicitly create a share link.
Clear separation of content and ads — ads may be shown to cover running costs, but they are kept clearly distinct from the content.

Contact

Feature ideas, bug reports and partnership inquiries are welcome. We usually reply within a few business days.