IGDB vs The Visual Novel Database

IGDB is a video game information database for searching games, companies, and characters. Search results can be sorted by relevance, title, release date, or rating, and the database accepts community contributions. Developers can query game data and related entities through its API, choosing fields, filters, sorting, and other request options. Non-commercial API use is free under the Twitch Developer Service Agreement. Commercial use requires a partnership, and products integrating the API are expected to show visible user-facing attribution. Access requires a Twitch account with two-factor authentication, an application Client ID and Client Secret, and OAuth2 application credentials. The API allows 4 requests per second, up to 8 open requests at once, and at most 500 results per request. Documentation provides daily-updated CSV data dumps and lists wrappers for several languages. Direct browser requests are not supported because the API has no CORS headers; a backend proxy is recommended. IGDB's API is available for free for non-commercial use, while commercial use requires a partnership.

The Visual Novel Database (VNDB) is a free resource for information about visual novels and eroge, available on the web and through an API. Its wiki lets people add and contribute information, including general details and practical coverage of releases, localisations and producers. Registered users can vote on visual novels and maintain lists of games they want to play or have finished. VNDB also aims to introduce visual novels to a broader audience across geographic and cultural differences. The Kana HTTPS API can query the database and manage user lists. Non-commercial API access costs nothing and is subject to limits: 200 requests per 5 minutes, one second of execution time per minute, and automatic abortion of requests exceeding three seconds. API availability is best-effort, with no guarantees about stability or applicability. It does not provide some site functions, including forums, database editing and account creation. Users can obtain API tokens from the Applications tab in My Profile, and a sandbox endpoint at beta.vndb.org/api/kana is available for testing and development. VNDB's first version went live in September 2007.