Playing with the Pyramids

Here is a scene of a friendly game of… something. Small pyramids are arrayed on a large table but who can guess at the rules? There may be a friendly wager on the outcome by the players, who have clearly all gone out for more coffee and snacks. Or maybe they’re taking a break on the balcony and enjoying the view of the city. When they return, regardless of who wins, they’ll need to cooperate on getting that trophy out of the room.

Note: I've checked the rules and betting isn't on the list of inappropriate subjects. If it should be, the money tiles can be removed from this scene.