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SPixs/README.md

Hi, I'm Pixs 👋

I write 6502 assembly, reverse-engineer and emulate 8-bit machines in Java, and train an AlphaZero-style chess engine.


TinyBubbles gameplay: click to play in your browser

🏆 TinyBubbles

A bubble shooter for the Commodore 64 in 3,810 bytes of 6502 assembly.
Winner of The C64 'Cassette 50' Charity Competition (2021), where every game had to fit in 4 KB.

▶ Play it in your browser · itch.io · How it fits in 4 KB

🕹️ Retro computing

Project
JMazeMaster Maze Master (C64, 1983) reverse-engineered from the cartridge ROM and rewritten 1:1 in Java.
Snake-Pit-disassembled A complete, functional and heavily commented disassembly of Martin Singleton's Snake Pit.
TinyGB A simple DMG Game Boy emulator in Java.
ModPlayer An Amiga MOD player in Java, with a retro UI.

♟️ AI & chess

Project
NanoZero A community AlphaZero-style chess engine in Java: MCTS guided by a neural network trained from scratch through self-play. nanozero.org
microgpt4j A Java 21 port of Karpathy's microgpt.py: GPT training and inference, zero dependencies.

🎄 Puzzles

Advent of Code in Java: 2015 · 2016 · 2022 · 2023 · 2024 · 2025

Pinned Loading

  1. ModPlayer ModPlayer Public

    Java Amiga MOD Player with retro UI

    Java 3

  2. nanozero nanozero Public

    NanoZero — moteur d'échecs AlphaZero communautaire · nanozero.org

    Java 1 1

  3. JMazeMaster JMazeMaster Public

    A 1:1 reverse engineered version of the original game from Commodore 64, rewritten in Java

    Assembly

  4. TinyBubbles TinyBubbles Public

    TinyBubbles — a 4 KB Puzzle Bobble-style game for the Commodore 64 in 6502 assembly. Winner of The C64 'Cassette 50' Charity Competition (2021).

    Assembly 3

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