This is the progenitor of Union Pacific. The game is similar to the Sid Sackson classic, Acquire, in that players are competing to become majority stockholders in several highly-abstracted companies. Each turn, a player chooses from one of two actions: expand an airline and put stock into his hand, or play stock from his hand. The trick is that when a scoring card shows up (randomly), only played stock counts as a player's holdings. - BoardGameGeek