The "Pluvia Compatibility" tag is for sharing the compatibility of games with the Pluvia platform. It helps users identify games that run smoothly, have issues, or need adjustments to work properly. If a game works with Winlator but not Pluvia due to DRM or Steam requirements, it could be cross-tagged under the "Winlator Compatibility" tag. This ensures clarity and helps users differentiate between games compatible with Pluvia and those requiring additional layers like Winlator.