Modes: three, including the classic Mahjong layout
Skills: patience and pattern reading, not reflexes
Cost: free in the browser
FNAF Mahjong is a version of the classic tile game with the characters from Five Nights at Freddy's on the faces. The rules will be familiar to anyone who has played this kind of puzzle - clear the board by removing matching pairs. There are three modes to choose from, and the Mahjong mode is the one that will take you a while. Pick whichever suits you and work through it.
Clearing a board without getting stuck
Always take the tile that unblocks two others over the one that unblocks none
Work the top layers down before touching the edges
If two identical pairs are open, clear the ones nearer the middle
Getting stuck late is almost always a decision made in the first minute
If you would rather see these characters in the game where they move on their own, start at FNAF 1.