• 1 College Library

• 13 Computer file

• 8 Life on other planets
• 5 Combat
• 3 Imaginary wars and battles
• 3 Shooting
• 3 Soldiers
• 2 Battles
• 2 Extraterrestrial beings
• 2 War
• 1 Dead space (Game)
• 1 Dystopias
• 1 Fantasy games
• 1 Human-alien encounters
• 1 Science fiction
• 1 Space ships
• 1 Video games
• 1 Xbox One (Video game console)
• 1 Xbox video games

• 13 Microsoft Corporation
• 4 343 Industries
• 4 Bungie (Firm)
• 2 Microsoft Studios
• 1 2K Games, Inc
• 1 Copyright Collection (Library of Congress)
• 1 Electronic Arts (Firm)
• 1 Firaxis Games (Firm)
• 1 Frontier Developments Ltd
• 1 Microsoft Game Studios
• 1 Sold Out (Firm)
• 1 Visceral Games (Firm)

• 13 English
• 1 Chinese
• 1 French

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