Undertale, released in 2015, made Sans one of gaming's most memed characters thanks to his time-aware dialogue and brutal boss fight. Fan music expanding that lore spread widely on soundboards and video edits, and this track credited to Doopix under the title Undertale: Time Paradox builds on the idea of Sans remembering repeated timelines. Part 7 suggests one entry in a longer series shared by fans. Its dramatic energy keeps it useful for paradox jokes, loop edits and mock final battles.