title.jpg			http://althistory.wikia.com/wiki/2012_Alien_Invasion?file=Alien_Invasion.jpg
alien.jpg			http://www.gamersdecide.com/pc-game-news/10-best-alien-invasion-games-you-should-play
meteor.jpg		http://chaoscrim3.deviantart.com/art/Meteor-City-157741547 (Meteor_City_by_Chaoscrim3.jpg)
meteor2.jpg		https://www.youtube.com/watch?v=AEi7NhSuFHs
destroyed_city.jpg		http://shadowyingzhi.deviantart.com/art/Destroyed-City-205566557/destroyed_city_by_shadowyingzhi-d3ee065.jpg
destroyed_city2.jpg		http://shadowyingzhi.deviantart.com/art/Destroyed-City-205566557/destroyed_city_by_shadowyingzhi-d3ee065.jpg
destroyed_city3.jpg		http://shadowyingzhi.deviantart.com/art/Destroyed-City-205566557/destroyed_city_by_shadowyingzhi-d3ee065.jpg
destroyed_city4.jpg		http://everlite.deviantart.com/art/ruinedCity02-405016537
survival_kit.jpg		http://lovepass77.deviantart.com/art/Supernatural-Survival-Kit-264600815/supernatural_survival_kit_by_lovepass77-d4djban.jpg
destroyed_city5.jpg		http://nacho3.deviantart.com/art/Destroyed-City-505524389

Not used:
https://s-media-cache-ak0.pinimg.com/originals/fc/31/a6/fc31a6045e3a81819e54e8418faba5c4.jpg

Fonts:
MECHANIZATION		http://www.fontmonger.com
DIGITAL PLAY ST		http://www.1001freefonts.com/es/digital_play_st.font