Music
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Attribution 3.0 Unported (CC BY 3.0)
https://creativecommons.org/licenses/by/3.0/

Mission - Nameless: The Hackers RPG Soundtrack by BoxCat Games
http://freemusicarchive.org/music/BoxCat_Games/Nameless_the_Hackers_RPG_Soundtrack/

Sprites
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Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
https://creativecommons.org/licenses/by-sa/3.0/

Author Jerom
https://opengameart.org/users/jerom
https://opengameart.org/content/top-sci-fi-cga-tileset

Modifications and additions were made - see ShareAlike folder