About Sadari.org

Our Mission

Sadari.org was created with a simple mission: to make the beloved Korean ladder lottery game (사다리타기) freely accessible to everyone around the world. Whether you are a group of friends splitting a restaurant bill in Seoul, a team of remote coworkers deciding who presents first, or a family choosing vacation activities from different continents, Sadari.org gives you a fair, transparent, and entertaining way to make random selections.

The ladder lottery has been a cornerstone of Korean culture for generations. It appears on variety shows, in classrooms, at office gatherings, and at dinner tables across the country. Almost every Korean person has played it dozens of times. Yet until recently, sharing this wonderful game with friends who are not in the same room -- or with people from different cultural backgrounds -- meant explaining the rules from scratch every time.

We built Sadari.org to bridge that gap. Our free online tool lets anyone create and play a ladder lottery game in seconds, with no downloads, no registration, and no cost. We believe everyone deserves access to this simple, elegant method of fair decision-making.

What Is Sadari (사다리타기)?

Sadari, which literally translates to "ladder riding" in Korean, is a random selection game that uses a grid of vertical lines connected by horizontal rungs. Each participant starts at the top of a vertical line and traces their path downward, following any horizontal rung they encounter. The result at the bottom of their final path is their outcome.

What makes sadari special is that it creates a mathematically perfect permutation -- every starting position maps to exactly one ending position, and no two people can arrive at the same result. This property makes the game provably fair, visually transparent, and impossible to dispute.

The game is also known as Amidakuji (あみだくじ) in Japan and "ghost leg lottery" in some English-speaking contexts. Regardless of the name, the principle is universal: random connections create fair outcomes.

Our Values

Why We Built This

The idea for Sadari.org came from a common experience: being in a group that needed to make a quick, fair random decision and not having an easy tool at hand. Sure, you can flip a coin for two people, but what about five? Or ten? Drawing names from a hat works, but nobody carries a hat full of paper slips to lunch.

The Korean ladder lottery solves this problem elegantly, but paper versions are cumbersome for remote groups, and existing digital tools were often cluttered with ads, required registration, or were difficult to use. We wanted to build something better -- a clean, fast, and respectful online experience that honors the simplicity of the original game.

The best tools are the ones that get out of your way. Sadari.org is designed to let you set up a game in seconds and get back to what matters: the fun of watching the result unfold.

Common Uses

People around the world use Sadari.org for all kinds of group decisions:

• Who pays for dinner? -- The classic Korean use case that started it all
• Task assignment -- Fairly distributing chores, work tasks, or responsibilities
• Team selection -- Randomly forming teams for sports, projects, or activities
• Party games -- Assigning prizes, dares, or challenges at gatherings
• Classroom activities -- Teachers randomly grouping students or assigning topics
• Office decisions -- Choosing presentation order, meeting facilitators, or volunteer roles
• Gift exchanges -- Randomly matching people for Secret Santa or similar events

Get in Touch

We love hearing from our users. Whether you have feedback, feature suggestions, or just want to say hello, reach out to us at [email protected] or visit our contact page.

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