A co operative board game of global defense for 1 4 players based on the award winning video game xcom enemy unknownr r a free and innovative digital app coordinates the escalating alien invasion teaches you the game and serves as your rules referencer r players assume four distinct roles each of which is vital to xcom39s success commander chief scientist central of64258cer and squad leaderr r a push your luck dice mechanic partners with the use of the app to heighten the