NostalgiaDB vs Yu-Gi-Oh! Card Database

NostalgiaDB is a free metadata database for retro game releases spanning 1977–2005. Its archive covers titles, platforms, release dates, ratings, cover art, and descriptions across 45 gaming platforms. Natural-language search helps locate games, while a GraphQL API provides access to releases, ROMs, systems, reviews, and media; API queries require a key and are limited to six levels of depth. Free SQLite database archives can be downloaded with a free registered account, and their presigned URLs remain valid for 15 minutes. Registered members can use the browser-based Play portal to run their own locally stored ROM files in a client-side emulator sandbox. Play requires a Chromium-based browser such as Chrome, Edge, Brave, or Opera. The portal says game files are read from the user’s device and are not uploaded or transmitted to Nostalgia Lab servers. Centralized sign-in supports Google, Microsoft, and Discord. Nostalgia Lab describes the platform as a non-profit preservation project funded by voluntary donations and serving researchers, historians, developers, and enthusiasts. It says it does not sell user data, serve targeted ads, or store payment information.

Yu-Gi-Oh! Card Database is an official Yu-Gi-Oh! Trading Card Game site for searching cards, decks, products and rules. Card pages provide detailed information from each card’s release date. Users can look up public Deck Recipes, including tournament championship and runner-up decks, or search for decks containing a chosen card. Product listings show the cards included in packs, boxes and other releases, with information available from release. Users can register, organize and publish Deck Recipes, including Speed Duel and DUEL LINKS decks; logged-in users can also keep Owned Cards and Wish Lists. The database includes detailed rules and the latest Forbidden & Limited List for official tournament restrictions. Its Trends ranking draws on newly created decks and decks used in tournaments. The service is free and lists web, Android and iOS availability. Konami’s Yu-Gi-Oh! NEURON companion app connects to the database for deck management and can identify up to 20 cards at once using a smartphone camera. Some areas may require registration, and Web Service use requires linking a Card Game ID and KONAMI ID.