Sources

Character and Effect Art
AutumnDeluge CC-By 4.0 CC-By 3.0
LLGD CC-By 4.0
Wulax CC BY-SA 3.0
Pierre Vigier CC BY-SA 3.0
Charles Sanchez CC BY-SA 3.0
William.Thompsonj CC BY-SA 3.0
Evert CC-By 3.0

Environment Art
Laneau ZImmerman (Sharm) CC-By 3.0 CC BY-SA 3.0
Bluecarrot15 CC-BY-SA 4.0 CC BY-SA 3.0\

Mobile Control Art
Kenny.nl

Music
Alyx Jones, Annette Huang, Eugene Golobokin, Steven Soucy, Alexei Galar CC-By 4.0

Sound Effects
Basto CC-By 3.0
qubodup CC BY-SA 3.0
Jute GPL 3.0
Little Robot Sound Factory CC-By 3.0
IMadeIt CC-By 3.0

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