Okey is a four-player Turkish tile game where you race to arrange all your tiles into valid groups and then discard one tile to finish.

The game uses 106 tiles numbered 1 to 13 in four colours, plus two blanks. Each player holds 14 tiles, while the starter holds 15. On your turn you draw a tile from the pile or take the previous player's discard, then throw one tile away. You win by forming runs (same colour, consecutive numbers) and sets (same number, different colours) that cover every tile. You can play it free in your browser at Game Finale.