(3-6 players; 60 minutes; ages 10+)
Power Grid (3-6 players; 60 minutes; ages 10+) is a top game on www.boardgamegeek.com. It also teaches about energy choices. The 60 minute introductory game is fantastic! The full game will take double that time. One of the things that I like best about power grid is that the lead player(s) are penalized just enough to keep everyone engaged.
I think the universe is pure geometry – basically, a beautiful shape twisting around and dancing over space-time.