Learn Befunge - 10 Code Examples & CST Typing Practice Test
Befunge is a two-dimensional esoteric programming language where code flows across a grid in multiple directions, allowing self-modifying behavior and unusual program structures.
Learn BEFUNGE with Real Code Examples
Updated Nov 25, 2025
Installation Setup
Install a Befunge interpreter (e.g., Funge-98 interpreter)
Choose between Befunge-93 or Befunge-98
Run programs via CLI tools
Verify with a simple 'Hello World'
Experiment with grid editing
Environment Setup
Install interpreter
Choose Befunge-93 or Funge-98
Test with simple examples
Optional: configure debugger
Run ASCII grid programs
Config Files
Not required
Optional interpreter config
Debugger configuration
Grid size adjustments
Execution logs settings
Cli Commands
befunge program.bf
funge program.bf
befunge --debug program.bf
befunge --version
befunge --help
Internationalization
ASCII-only instruction set
Docs mostly in English
Global esolang participation
Language-independent logic
Universally shareable programs
Accessibility
Runs in any interpreter
Low dependency footprint
ASCII-based source
Online interpreters available
Tutorials accessible globally
Ui Styling
Pure ASCII layout
2D grid visualization optional
Terminal output
Online editors may highlight flow
Minimalist design
State Management
Stack holds temporary data
Pointer direction stores flow state
Grid content reflects program logic
Self-modification updates state
Interpreter tracks runtime variables
Data Management
Stack data only
Grid cells store program instructions
ASCII-based I/O
No persistent storage
Extended Funge variants add I/O
Frequently Asked Questions about Befunge
What is Befunge?
Befunge is a two-dimensional esoteric programming language where code flows across a grid in multiple directions, allowing self-modifying behavior and unusual program structures.
What are the primary use cases for Befunge?
Code-golf challenges using 2D logic. Educational demonstrations of non-linear control flow. Studying self-modifying grid-based programs. Obfuscation and creative puzzle programs. Esoteric language experimentation
What are the strengths of Befunge?
Visually interesting 2D code layout. Great for puzzles and creativity. Self-modifying code built-in. Compact, expressive programs. Vibrant esolang community support
What are the limitations of Befunge?
Not suitable for large applications. Hard to debug due to non-linear flow. Limited standard libraries. Hard for beginners to understand. Optimizing compilers struggle with its design
How can I practice Befunge typing speed?
CodeSpeedTest offers 10+ real Befunge code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.