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XCOM: Enemy Unknown Tham khảoLiên quan
XCOM: Enemy Unknown X-COM: Terror from the Deep X-COM: UFO Defense Xcode Xe ôm Xiomara Castro Xcôtlen Xóm vắng Xóm nước đen XchmTài liệu tham khảo
WikiPedia: XCOM: Enemy Unknown http://www.gameinformer.com/b/features/archive/201... http://www.gameinformer.com/b/features/archive/201... http://www.gamespot.com/xcom-enemy-unknown/related... http://www.gamespot.com/xcom-enemy-unknown/related... http://gematsu.com/2016/03/xcom-enemy-unknown-plus... http://www.joystiq.com/2013/03/23/xcom-enemy-unkno... //www.mobygames.com/game/xcom-enemy-unknown http://www.pcgamer.com/previews/xcom-enemy-unknown... http://news.softpedia.com/news/XCOM-Enemy-Unknown-... http://www.xcom.com/enemyunknown/