Tomy's blurb on the game, which is the 3rd biggest selling board game in the world:
Rummikub is the unique, fast-paced numbers game of tile manipulation. Build runs or sets of numbers then recombine the tiles in different ways to achieve the highest score. One of the worlds most compulsive family games, its easy to learn and a challenge to master!
I bought it in the Swansea Fforestfach store today - there was a whole pile of them.