From a technical standpoint, shift refers to the difference in phase angles between signals. In media production (specifically audio engineering and broadcast), managing relative phase is essential for:

I should check if this is a known product or if there's more context missing. If the user is referring to a specific game, show, or media, they might have provided an incorrect title. Alternatively, "relatives phase" might be part of a game similar to "Family Feud" or another interactive entertainment where relatives participate. The term "phase" could indicate different stages or parts of the content.

If you’ve encountered this term online, it may be: