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Articles

Explore learning guides, culture and tournaments, and the developer chronicle.

Learn

Canonical, evergreen guides.

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Foundations

Rock Paper Scissors: Complete Competitive Overview

A complete overview of Rock Paper Scissors as a competitive system, not a playground ritual.

World

Culture, tournaments, and commentary.

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World

JPL Season 3 Recap: Expansion Year Crowns New Champions

A look back at Janken Pro League Season 3: Neon Nova took JPL1, Riven won JPL2, and ten were promoted into an expanded top flight with no demotions.

World

What Is Janken? Meaning and Cultural History

The cultural roots of Janken, from language and ritual to how it became a structured decision system in Japan.

Journal

Dev log, seasons, and data reports.

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Journal

Why We Built a Context-Aware Competitive RPS Engine

Most online RPS simulates independence. We built a system that acknowledges context—experience, streaks, pressure—so repeated play feels like real competition.