Match the hotel, tile by tile.
MatchHex is mahjong solitaire built on hexagons. Clear a layered board by matching free pairs of tiles, each one faced with the artwork of a room aboard the Haunted Space Hotel: the Action Room, the Upgraded Action Room and the Weakness Room of all six factions.
A tile is free when nothing covers it and one of its sides is open. Take the pairs you can see, and keep the ones you are going to need later. The tiles are real 3D pieces under a perspective camera, so a stack reads as a stack: turn the board with the arrows or a drag and look at it from another side.