# Rangi42/polishedcrystal

An upgrade to Pokémon Crystal. Brings features and content up to date, and adds some original content.

Repository: https://github.com/Rangi42/polishedcrystal
Canonical: https://ross.abutalabs.com/products/polishedcrystal
Homepage: https://www.pokecommunity.com/threads/pok%C3%A9mon-polished-crystal-update-3-1-1.373172/
Language: Assembly
License Family: other
Topics: pokemon, game, gameboy-color, gbz80
Last push: 2026-08-26T00:38:32+00:00

## Health v2 (maintenance only)
Score: 86/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 60, longevity 100
- inputs: {"age_days": 3388, "days_push": 8, "days_rel": 265, "gap_med": 13.0, "n_releases_24m": 7}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1624, forks 339 (observed 2026-08-28T04:05:12.772653+00:00)

## What it is
Pokémon Polished Crystal is an open-source ROM hack of Pokémon Crystal built on the pret pokecrystal disassembly, written in Game Boy assembly. It modernizes the original game with updated mechanics, abilities, quality-of-life features, and original content while remaining fully playable on Game Boy Color hardware and emulators.

## Use cases
- play an improved version of Pokémon Crystal on an emulator or Game Boy Color
- apply a modern ROM hack patch to a Crystal ROM
- study a well-organized Game Boy assembly codebase
- create a custom Pokémon ROM hack based on a disassembly
- experience modern battle mechanics like abilities on retro hardware
- rebuild a Game Boy Color game from source code

## When to choose
- you want a polished, feature-rich remake of Pokémon Crystal playable on original hardware or emulators
- you want to learn or fork a complete, well-structured gbz80 assembly game project
- you want modern Pokémon mechanics (abilities, natures, updated moves) in a Gen 2 game

## When to avoid
- you need a legally distributable game - it requires an original Crystal ROM and has no license
- you want to develop a new game rather than modify Pokémon Crystal
- you need a high-level language or modern engine instead of assembly

## Facets
- artifact type: application
- maturity: active
- function: game, graphics, simulation
- domain: gaming-tools, entertainment
- platform: game-engine, cross-platform
- tags: pokemon, rom-hack, gameboy-color, assembly, disassembly, retro-gaming, fan-game, game-development

## Member repositories
- Rangi42/polishedcrystal (main) score 86

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:12.772653+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:48:37.771054+00:00, confidence not recorded.
  - readme: https://github.com/Rangi42/polishedcrystal (fetched 2026-08-28T04:05:12.772653+00:00, sha da98f8a40d64)
  - homepage: https://www.pokecommunity.com/threads/pok%C3%A9mon-polished-crystal-update-3-1-1.373172/ (fetched 2026-08-29T11:21:22.964031+00:00, sha 5320b745599c)
  - site_page: https://www.pokecommunity.com/help/aboutus (fetched 2026-08-29T11:21:22.973961+00:00, sha c9356c74caa2)
- Data as of 2026-08-30T08:39:29.467469+00:00.