Boardgamegeek https://boardgamegeek.com/boardgame/1419/pylos
English - At the start of the game, each player has fifteen balls, either light or dark, and they take turns placing them on a game board that has sixteen indentations on it in a 4x4 grid. Once four balls have been placed next to one another in a square, a ball can be placed on top of them, forming a second level of play. Players can then place balls on this second level, eventually allowing a ball to be placed...
Official https://www.gigamic.com/jeu/pylos-classic
French - Modèle d'esthétique, son design en fait un objet de décoration permanent. Couronné Jeu de l'année en Italie et aux U.S.A., Pylos impose un nouveau principe, simple mais génial, dans le domaine de la stratégie: un jeu très riche, aux multiples subtilités.
Ludovox http://ludovox.fr/jeu-de-societe/pylos-2213/
French - Un jeu de David G. Royffe