At the start of the game each player has a hand of 20 tiles. The object is, by drawing and discarding tiles, to form sets of equal numbered tiles, and runs of consecutive tiles of the same color. These groups of the tiles are moved from the hand to the table. Additionally it is possible to add tiles one-by-one to the existing series on the table. The less tiles will remain on the hand at the end the better.
You can find detaild information about how to play Okey 101 in game help menu.
If you enjoy rummikub games, you will enjoy Okey 101 too :)