In Balloon Cup, the players compete in several short balloon flights (hops) to collect the colored cubes associated with each hop. Four landscape cards, two Plains alternating with two Mountains, are laid out and 1, 2, 3 or 4 cubes in assorted colors (gray, blue, green, yellow, red) are added. From a hand of 8 Balloon cards must try to pass each landscape by adding cards matching the colored blocks onto their side of table, although winds (and cunning) may occasionally cause them to play on their opponents side - a move that can really ruin the opponents plans.High-valued balloons are played on the Mountains and low-valued balloons on the plains. Whoever is the better balloonist takes the cubes from the card, which is then flipped over and refilled with cubes. Mountains becomes Plains and vice-versa. 5 Trophy cards of value 3 to 7 are placed at the top of the cards. When a player has collected enough cubes of a given color, he earns the Trophy card for that color. Players may even trade 3 otherwise useless cubes for 1 they can use. The first player to earn 3 trophy cards is the winner!Balloon Cup is part of the Kosmos two-player series. - BoardGameGeek