"Legacy codes" is the community nickname for retired Blue Lock Rivals codes — drops from launch beta, Halloween 2025, the Christmas event, the V1.0 stable update, and every weekly milestone. None of them redeem anymore, but they're useful when:

• You spotted an old code on a YouTube video and want to verify it's dead.
• You're curious what rewards previous events handed out.
• You want to estimate how often the dev team drops codes (≈ every 5–8 days).

For active codes, head to the main codes list.