References 190% CONFIDENCEOverall confidence: 90%How well the pin's source and references back up its dates.Weighted average of how firmly 1 reference, the source included, supports the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better

The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.

• [1]90%
  nintendo.com/us/store/products/super-smash-bros-ultimate-switch

  nintendo.com· Posted Oct 28, 2026· Starts Dec 7, 2018 ✓· 100% of score

  United States release for Nintendo Switch; opened HTTPS listing states “Release date: December 7, 2018”.

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