Terraforming Mars

In Terraforming Mars, you and up to four friends take turns buying and playing cards that construct cities or enact terraforming projects on a hexagonal map of Mars. Each terraforming project has a planetary effect, and will give you a special bonus—for example, allowing you to produce resources like titanium faster, or lowering the cost of future projects. It's by chaining those bonuses together to form clever bonus-earning engines that you'll earn the most victory points and win the game.