Master the 38 provinces of Indonesia — across Sumatra, Java, the Lesser Sunda Islands, Kalimantan, Sulawesi, the Maluku Islands, and Papua. Name them, click each on the map, pick the highlighted one, sort them by area and population, match each to its capital, race the clock, and identify their flags. (Indonesia split four new provinces from the Papua region in 2022 — Central Papua, Highland Papua, South Papua and Southwest Papua — all included here; the flag round covers the 34 provinces with an official provincial flag.)