First-person exploration puzzle game set in the ruins of an underground civilization called D'ni. You create a character and move freely through 3D environments—no more point-and-click navigation from earlier entries in this series. The game spreads across multiple self-contained worlds (called Ages), each with its own architecture and puzzle sets to work through. Puzzles lean heavily on observation, pattern recognition, and manipulating machinery or environmental systems. The D'ni backstory unfolds as you explore abandoned structures and piece together what happened to this society. Expect to spend significant time examining your surroundings for clues rather than rushing through linear objectives. Best suited for players who enjoy slow-burn environmental storytelling and don't mind trial-and-error problem-solving.
