Keltis has been released in the U.S. as Lost Cities: The Board Game.
Keltis is a multi-player game that has some similarities to Knizia's ''Lost Cities''.
Players play cards to move their playing pieces along stone paths. There are cards with 5 different colors/symbols, each corresponding to one path; in addition, each card shows a number (0-10, twice each). In each color, each player can play his cards either ascending or descending. Like Lost Cities, it's better to concentrate on a few paths, since the last spaces grants high points, but ending early gives negative ones.