There are 4 Shadow Crystals currently obtainable in Deltarune. IGN’s 2025 guide says there are “currently four of them in the game,” and another guide notes Seam says he can make something using five Shadow Crystals, with only four found so far.

Quick context

  • Shadow Crystals are tied to secret bosses and key items in the game.
  • The common consensus right now is 4 collected in released content , with 5 possibly planned for a future chapter or update.

Bottom line

If you’re asking about what’s in the game right now , the answer is 4.