Time Agent

Tiles, representing the flow of time through the past, are randomly placed face down on the board, making each game different. While players know the general zone a given event is in, they must find its exact location during the game.
Each turn, players receive galactic credits, buy additional time machines and operatives, and move agents to alter events and timestreams. As they do so, races will gain and lose both resources and galactic status. In addition, vital technologies, including time travel itself, may be cut off from the present.
Operatives already in the past can prevent another race from altering timestreams or events at a given tile unless that race successfully finds and eliminates them.
In order to win, a race must destroy time travel while simultaneously altering enough key events to have the most victory points when the game ends.