"The Lost Valley: The Siege of Di n Bi n Ph " is a solitaire dice and card-driven board wargame of tactics and resources management about the battle of Di n Bi n Ph, which saw the defeat of the French Expeditionary Corps in Indochina by the Vietnamese People s Army in 1954. ​ Game Components 1 22" x 34" Full Color Map 120 Double-Sided 5-8" Counters and Markers 45 Event Cards (Card Deck) 1 16- Page Rule Book 6 Double-Sided Player.