Nightmare

Nightmare is a crop mutation that multiplies the base sell value of a crop by x15. It is applied by the Baku pet, one of the new pets that came with the Fall Market Event 2026 together with the Koala, and it gives harvests a different source of Sheckles from the usual weather-based mutations.

Since the effect comes from a pet, you need the Baku on hand rather than a specific weather or event window. The Fall Market Event 2026 started on September 19, 2026, and its second part followed on September 26, 2026, so Nightmare belongs to the current fall content.

The x15 value is modest next to many other mutations on this site, but it still lifts an ordinary crop above its plain sell price. It mirrors Dream, which has the same x15 multiplier and is applied by the Koala. The numbers here come from the information published on the game's wiki.