10PRINT on All the Things

The famous one-liner maze generator has been implemented on countless systems. Here’s my collection of 10PRINT posts showing this iconic program running on various vintage computers and calculators.

What is 10PRINT?

10PRINT is a one-line BASIC program that creates an endless scrolling maze pattern. The original Commodore 64 version is:

10 PRINT CHR$(205.5+RND(1)); : GOTO 10

This simple program randomly prints either a forward slash (/) or backslash (\) character, creating a maze-like pattern when the characters connect on screen.

The Appeal

What makes 10PRINT fascinating is its elegant simplicity - maximum visual output from minimal code. It’s become a benchmark for vintage computing platforms and a fun challenge to implement in different languages and systems.

All 10PRINT Posts