Distributions in [Fe/H] of all the stars in the galaxies involved in the six major merger events in VINTERGATAN. The distributions are normalized by the total stellar mass of the galaxies. Each color represents a merger event; the mass ratio, redshift, and look-back time are indicated in the top right corner. At ɀ = 2.7 two distinct events cannot be separated by the time resolution of the simulation outputs, and are thus labeled with the same redshift. The [Fe/H] distributions of VINTERGATAN (i.e., the most massive Milky Way-like progenitor) at the epochs of the mergers are shown with the filled histogram, for comparison with that of its companion galaxies (solid lines).