• 3 Human-alien encounters
• 3 Imaginary wars and battles
• 3 Space warfare
• 2 Life on other planets
• 2 Video games
• 1 Adventure video games
• 1 Alien (Motion picture)
• 1 Aliens (Motion picture)
• 1 Cyborgs
• 1 Death (Personification)
• 1 Demonology
• 1 Extraterrestrial beings
• 1 Fantasy games
• 1 Hand-to-hand fighting
• 1 Science fiction
• 1 Shooting
• 1 Sony video games
• 1 War
• 1 Weather

• 1 Gearbox Software
• 1 Media Vision (Firm)
• 1 Microsoft Corporation
• 1 PlatinumGames (Firm)
• 1 Sony Computer Entertainment

• 10 English

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