academy acceptance action adolescence advanced-technology adventure ai ai-(artificial-intelligence) alien alien-communication alien-invasion alien-species alien-technology aliens ambition american americansciencefiction artificial-intelligence artificialintelligence assimilation automation award:hugo_award=1986 award:hugo_award=novel battle battle-room battle-school battle-simulation battle-tactics battleschool(imaginaryplace) battling bestseller betrayal brotherhood brotherly-love brotherly-relationships brothersandsisters bullying character-development child-prodigies child-prodigy child-protagonist child-protagonists child-soldiers childhood children children'sstories children-in-war childrens-literature childsoldiers chosen-one ciencia-ficción civilizational-conflict cloning colonization coming-of-age command communication compassion competition complex complex-characters computer-games courage cybernetics dark dataprocessing deception destiny dystopia dystopian dystopian-future dystopian-society dystopian. earths-protection education empath empathy end-of-the-world ender ender(fictitiouscharacter) ender-wiggin enders-game enders-siblings enderwiggin(fictitiouscharacter) endoftheworld epic-battles espionage ethical-dilemmas ethics exploration extermination extraterrestrial-intelligence extraterrestrial-life extremism family family-dynamics family-relationships fantasy fantasymediatie-infiction fear ficción fiction friendship future future-dystopia future-society future-technology futuristic futuristic-setting futuristic-society futuristic-technology galactic-empire game game-strategy game-theory games gamesmanship gaming genetic-engineering genetic-manipulation geneticengineering genetics genius genius-protagonist geniuses genocide gifted-children government government-conspiracy government-control government-manipulation graphicnovels great-adventure hardsciencefiction hegemony hermanos hero heroism hidden-agendas hive-mind horrorcomics hugoawardwinner human-aggression human-empathy human-extinction human-survival humanity identity independence intelligence intense intergalactic-war intergalactic-warfare international-relations interstellar-conflict interstellar-politics interstellar-travel interstellar-war isolation juvenilefiction leadership loneliness longnowmanualforcivilization love loyalty maniobrasdeguerra manipulation manipulation-of-time mazes military military-academy military-fiction military-school military-science-fiction military-strategy military-tactics military-training militaryartandscience militaryeducation mind-control mind-game mind-games mind-manipulation moral-ambiguity moral-dilemma moral-dilemmas morality newyorktimesbestseller nyt:mass_market_paperback=2011-07-30 openlibrarystaffpicks orson-scott-card otherfantasyfictioncategories othersciencefictioncategories outcast outer-space overcoming-fear parallel-universe peer-pressure perseverance personal-sacrifice philosophical philosophy political-intrigue political-philosophy politics power power-dynamics power-struggle pre-teen-genius prejudice prize:nebula prodigious-intelligence prodigy protagonist psychological psychological-manipulation psychological-thriller psychological-warfare psychology readinglevel-grade10 readinglevel-grade11 readinglevel-grade12 readinglevel-grade7 readinglevel-grade8 readinglevel-grade9 redemption relationships resilience revenge rivalry sacrifice school school-life sci-fi science-fiction sciencefiction secrets self-discovery sibling-dynamics sibling-relationship sibling-relationships sibling-relationships. sibling-rivalry siblings simulation-games simulations social-manipulation soldier solipsism solitude space space-academy space-adventure space-battle space-battles space-colonization space-exploration space-fleet space-opera space-travel space-war space-warfare spaceship spacewarfare strategic strategic-genius strategic-thinking strategizing strategy super-advanced-technology surveillance survival survival-skills suspense suspenseful tactical tactical-genius tactics talented-children team-building teamwork technology teen-protagonist telepathy the-future theenderquintet thrill training trauma triumph trust ultimate-game unconventional underdog unpredictable-twist untrustworthy-adults video-game video-games video-gaming videogames violence virtual-reality virtual-reality-games war war-games war-strategy war-tactics warfare wargames wiggin world-building xenocide xenophobia young-adult youth