Privacy Policy

Archetype Nexus — Yu-Gi-Oh! Archetype Database

Last updated: June 10, 2026

About This Policy

This privacy policy explains what information Archetype Nexus collects when you visit the site, how it is used, and your rights regarding that data. By using this site you agree to the practices described here.

Archetype Nexus is a fan-made Yu-Gi-Oh! archetype reference and replay analysis tool. It is not affiliated with Konami, Yu-Gi-Oh! or any official publisher.

What We Collect

If you are not logged in, we do not collect any personally identifiable information. Anonymous usage data may be collected via Google Analytics (see below).

If you log in with Discord, we receive the following from your Discord profile via OAuth:

Your Discord username and display name
Your Discord avatar
A Discord user ID (used as your account identifier)

We do not receive your Discord password, email address, server memberships, messages, or any other Discord data beyond the above.

Replay files: When you upload a .yrpx replay file, the file content and associated metadata (archetype names, win/loss result, turn count, tags) are stored to your account. You control whether replays are public or private.

How We Use Your Data

To display your profile (name, avatar) on your account page
To store and retrieve your replay library
To compute statistics shown on your profile (win/loss, archetypes played)
To show your public replays to other visitors if you choose to share them

We do not sell your data, use it for advertising targeting, or share it with any third party other than the infrastructure providers listed below.

Third-Party Services

Discord OAuth

Used solely to authenticate your identity. We never post on your behalf or read your Discord activity. Discord Privacy Policy

Supabase

Hosts the authentication system and replay metadata database. Data is stored in the EU (europe-west1). Supabase Privacy Policy

Google Cloud Storage

Stores uploaded replay files. Files are addressed by a unique identifier and are only accessible to you (and publicly if you choose to share). Google Cloud Privacy Notice

Google Analytics

Used to understand how visitors use the site (page views, traffic sources). Analytics cookies are only set with your consent. You can opt out via the cookie preferences. Google Privacy Policy

Cookies

This site uses cookies in three categories. You can manage your preferences at any time via the cookie icon in the bottom-left corner.

Necessary — session and authentication tokens required for login to work. These cannot be disabled.
Analytics — Google Analytics cookies that help us understand site usage. Only set with your consent.
Advertising — optional personalization cookies. Only set with your consent.

Your Rights

If you have an account, you can:

Access your data at any time from your profile page
Delete individual replays from your profile page
Control visibility of each replay (public / private)
Log out to end your session at any time

To request full account deletion or a data export, reach out via the Archetype Nexus Discord server.

Data Retention

Account data (username, avatar reference) and replay metadata are retained for as long as your account is active. Replay files stored in Google Cloud Storage are retained until you delete them. Analytics data is retained per Google's standard policies (26 months by default).

Changes to This Policy

If this policy changes in a material way, the "Last updated" date at the top of this page will be updated. Continued use of the site after a change constitutes acceptance of the updated policy.

Questions? Join the Discord server.

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