The landmasses have drifted loose, slide and spin each one home on an empty world.
The continents and oceans float free of a blank globe. Drag each piece to its real-world position and rotate it until everything locks into the correct map of Earth.
Drift Apart is a drag-and-rotate world-map assembly puzzle themed around plate tectonics, linking the continents' shapes to their drift.
Reassembling continents and oceans onto a blank globe is continental drift run backwards — the hypothesis Alfred Wegener argued from exactly this observation, that the coastlines fit.
Requiring rotation as well as position is the original precision.
Rotation is what made the original argument persuasive. Matching outlines could be coincidence; matching them only after turning them, and finding the rock formations and fossils line up too, is the evidence that eventually forced plate tectonics to be taken seriously.
Drift Apart is a drag-and-rotate world-map assembly puzzle themed around plate tectonics. It's an original, free browser game built in-house for PlayPendium.