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What Is Befunge?
A plain introduction to Befunge, the esoteric language where code lives on a two-dimensional grid and an instruction pointer moves in four directions.
Esoteric code
Programs that run across a grid, explained plainly.
An independent explainer on Befunge, Funge-98, esoteric programming languages, two-dimensional program flow and language design puzzles.
133 in-depth guides 16 topics Oct 2026 latest guide
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Guides to start with
Each one links on to more specific articles in its topic.
What Is Funge-98?
Funge-98 generalizes Befunge into a larger, better-defined family of grid languages. Learn its goals, its main differences from Befunge-93, and why it matters.
How Grid-Based Program Flow Works
Learn how a pointer moving across a two-dimensional grid replaces the top-to-bottom reading of ordinary code, and how turns, loops and branches emerge from layout.
What Are Esoteric Programming Languages?
Esoteric programming languages are built for fun, art, puzzles or experiments rather than practical work. Learn what defines them and why people make them.
Visual and Two-Dimensional Programming Languages
A survey of languages where position on a plane carries meaning, from Befunge and Fish to Piet and Hexagony, and where the Funge family fits among them.
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The Funge Family
Befunge, Funge-98 and how grid-based programs flow.
Esoteric Languages
Unusual languages beyond Funge and what makes them interesting.
Design and Puzzles
Language design ideas, puzzle programming and building interpreters.
Programming in Funge
Practical techniques, algorithms and advanced features for writing grid programs.
More Esoteric Languages
Tape, stack and unusual paradigm languages plus the culture around them.
Theory and Tools
Computability ideas, interpreter building and puzzle practice.