• 5 College Library

• 12 Survival
• 7 Combat
• 4 Battles
• 4 Epidemics
• 4 Private military companies
• 4 Robots
• 4 Shooting
• 4 Special forces (Military science)
• 4 Waste lands
• 3 Zombies
• 2 Cyborgs
• 2 End of the world
• 2 Imaginary wars and battles
• 2 Monsters
• 2 Nuclear warfare
• 2 Social aspects
• 2 Sony video games
• 2 Video games
• 1 Bioengineering
• 1 Biology
• 1 Civil war
• 1 Death
• 1 Imaginary places
• 1 Special operations (Military science)

• 5 Sony Interactive Entertainment America LLC
• 4 Activision (Firm)
• 2 Bethesda Softworks (Firm)
• 2 Naughty Dog, Inc
• 2 Naughty Dog, Inc.
• 2 Sony Computer Entertainment
• 1 2K Games, Inc
• 1 2K Games, Inc.
• 1 Avalanche Studios
• 1 Deep Silver (Firm)
• 1 Guerrilla Games (Video game company)
• 1 Kojima Productions (Firm)
• 1 Kojima, Hideo, 1963-
• 1 Sony Computer Entertainment America
• 1 Treyarch (Firm)
• 1 Warner Bros. Interactive Entertainment

• 17 English
• 1 French
• 1 German
• 1 Italian
• 1 Russian
• 1 Spanish

• 4 United States
• 1 Moscow (Russia)
• 1 West (U.S.)
• 1 West United States

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