• 18 College Library

• 29 Imaginary wars and battles
• 23 Space warfare
• 19 Combat
• 16 Survival
• 14 Star Wars films
• 12 Life on other planets
• 11 Shooting
• 8 Human-alien encounters
• 7 Dystopias
• 7 Sony video games
• 6 Extraterrestrial beings
• 6 Video games
• 5 Epidemics
• 5 Imaginary places
• 5 Jedi (Fictitious characters)
• 5 Swordplay
• 4 Battles
• 4 Demonology
• 4 LEGO toys
• 4 Prisons
• 4 Robots
• 4 Video Games
• 4 Weapons
• 3 Cyberpunk culture
• 3 Megacities

• 11 Electronic Arts (Firm)
• 6 Warner Bros. Interactive Entertainment
• 5 Sony Computer Entertainment
• 4 Bethesda Softworks (Firm)
• 4 K'ŭraep'ŭt'on (Firm)
• 4 Sony Interactive Entertainment America LLC
• 4 Striking Distance Studios
• 4 Ubisoft (Firm)
• 3 CD Projekt S.A. (Firm)
• 3 Lucasfilm, Ltd
• 3 Microsoft Corporation
• 3 Respawn Entertainment
• 3 THQ Nordic (Firm)
• 3 TT Games (Firm)
• 2 Aspyr Media, Inc.
• 2 Bandai Namco Entertainment America Inc.
• 2 BioWare Corp.
• 2 FromSoftware
• 2 Gearbox Software
• 2 Guerrilla Games (Video game company)
• 2 InnerSloth (Firm)
• 2 Koch Media
• 2 Mad Dog Games LLC (Firm)
• 2 Maximum Games (Firm)
• 2 Motive Studio

• 74 English
• 13 French
• 9 Spanish
• 2 German
• 2 Japanese
• 1 Chinese
• 1 Italian
• 1 Korean
• 1 Polish
• 1 Portuguese
• 1 Romance (Other)
• 1 Russian

• 5 Outer space
• 4 Callisto (Satellite)
• 2 England
• 2 London
• 2 London (England)
• 2 West (U.S.)
• 2 West United States
• 1 Detroit
• 1 Detroit (Mich.)
• 1 Hong Kong (China)
• 1 Japan
• 1 Jupiter (Planet)
• 1 Mars (Planet)
• 1 Michigan
• 1 Moon
• 1 Washington (D.C.)

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