SM64: Beyond the Cursed Mirror 1.3 is a ROM hack of Super Mario 64 that introduces a new storyline and likely new level areas centered around a cursed mirror. The original Super Mario 64 involved collecting stars in various levels. This ROM hack adds new content, involving a mirror acting as a plot device to add new worlds.  The gameplay might include exploration of these new areas and new challenges. The version number suggests that this is an updated version of the mod, implying ongoing development and improvement by the ROM hacker. This demonstrates the ongoing nature of the ROM hacking community and its commitment to expanding on existing games.

SM64: Beyond the Cursed Mirror 1.3

SM64 Scaling Test