marco's retrobits: retrocomputing, retrogaming and retroprogramming

Laddder: my entry to the 15th BASIC 10 Liner Contest

A 3D Monster Maze-like game for the ZX Spectrum and Commodore 64

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Advent of Code 2025 with the ZX Spectrum Next – Day 2 Part 1

My NextBASIC solution to the second puzzle, part 1

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ZX Spectrum Next - SD side view

Advent of Code 2025 with the ZX Spectrum Next – Day 1 Part 2

My solution to the 2nd part of the 1st puzzle, implemented in NextBASIC

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Advent of Code 2025 with the ZX Spectrum Next – Day 1 Part 1

My solution to the first puzzle, implemented in NextBASIC

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Lader update

New release of the platformer with 5 new levels!

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Welcome to marco’s retrobits!

On this page you will find games and programs I’ve written for computers such as the Sinclair ZX Spectrum, ZX Spectrum Next and ZX81, as well as other retrocomputing and retrogaming stuff.

You can browse my creations, read related blog posts or visit my itch.io profile, YouTube channel, Facebook page or GitHub repositories.

Enjoy!
Marco

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Fantasy retro-computer

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