--Textures--
Moon surface texture: CC0, https://tileable.co/terms-and-conditions/
Duct texture: CC0, https://tileable.co/terms-and-conditions/
Wall texture: CC0, https://3dtextures.me/about/
Airlock texture: CC0, https://opengameart.org/content/40-free-metal-textures-from-mtc-sets
Vent texture: CC0, https://publicdomainvectors.org/en/free-clipart/Metal-ventilation-grill-vector-image/13994.html
Crate texture: CC0, https://opengameart.org/content/sci-fi-crate-1
Table and chair textures: CC0, https://ambientcg.com/view?id=Wood067
Counter texture: CC0, https://ambientcg.com/view?id=Marble016
Sofa texture: CC0, https://ambientcg.com/view?id=Fabric045
Motor texture: CC0, https://publicdomainvectors.org/en/free-clipart/Electrical-motor/56259.html

The hovercraft fan,refridgerator and cabinet textures were created from photographs of real objects.
Other textures not listed here were created from scratch using GIMP.

--Sprites--
Astronaut sprite: CC0, https://opengameart.org/content/astronaut-ideas
Alien sprite: CC0, https://opengameart.org/content/2d-rpg-enemy-set
Alien splat: CC0, https://opengameart.org/content/splattexture
Wrench: CC0, https://publicdomainvectors.org/en/free-clipart/Pipe-wrench-vector-illustration/11183.html

--Menu Assets--
Menu background image: CC0, https://svs.gsfc.nasa.gov/3895
Menu moon image: CC0, https://www.publicdomainpictures.net/en/view-image.php?image=44955&picture=full-moon-at-midnight-close-up
Icon: CC0, https://photojournal.jpl.nasa.gov/catalog/PIA14021

--Sounds--
Airlock sound: CC0, https://freesound.org/people/Paul368/sounds/264063/
Oxygen sound: CC0, https://freesound.org/people/davidlay1/sounds/416080/
HVAC sound: CC0, https://freesound.org/people/raygrote/sounds/189986/
Drill sound: CC0, https://freesound.org/people/PapercutterJohn/sounds/318203/
Gravity generator sound: CC0, https://freesound.org/people/ct202/sounds/415478/
Reactor start/stop sound: CC0, https://freesound.org/people/qubodup/sounds/222372/
Reactor running sound: https://freesound.org/people/felix.blume/sounds/155834/
Vending machine sound: CC0, https://freesound.org/people/Emma7073/sounds/250195/
Eating sound: CC0, https://freesound.org/people/Breviceps/sounds/447916/
Alien sound: CC0, https://freesound.org/people/JustInvoke/sounds/147017/
Alien attack sound: CC0, https://freesound.org/people/vmgraw/sounds/257690/
Alien death sound: CC0, https://freesound.org/people/mrickey13/sounds/515620/
Research station sound: CC0, https://freesound.org/people/wtermini/sounds/546450/

--Models--
Reactor model: CC BY-SA 4.0, https://sketchfab.com/3d-models/big-reactor-38f045b46af043a798ca40d96f754e54
Gravity generator model: CC BY-SA 4.0, https://sketchfab.com/3d-models/reactor-core-c1411e8423274f92bde84a8e92544397
Coolant tank model: CC BY-SA 4.0, https://sketchfab.com/3d-models/scifi-water-tank-ad06ee30b8784201bb6509ec77edfcac
Drill model: CC BY-SA 4.0, https://sketchfab.com/3d-models/driller-cc521221251a4c87b0cb429f98de882c
HVAC model: CC BY-SA 4.0, https://sketchfab.com/3d-models/hvac-unit-0bf1acaa6f1d4a9bb38cfc91fd115f9c
Oxygen generator model: CC BY-SA 4.0, https://sketchfab.com/3d-models/apparatus02-c00e97d2f9454840a96d8adcae22738f
Console model: CC BY-SA 4.0, https://sketchfab.com/3d-models/control-painel-c05341af291b49ef9cfce8e9fbe413f8
Research station model: CC BY-SA 4.0, https://sketchfab.com/3d-models/kyecorp-console-f609887785fc497e9f0443fb7b276b81
Toilet model: CC BY 4.0, https://sketchfab.com/3d-models/toilet-868beb5a0e6840d7a1d647a42a5e5a8c

The hovercraft, coolant pump, pipes, bunk beds, refridgerator, light fixtures, sink and shower meshes were all created by Droog71 and are licensed CC0.

--Code--
All code was written by Droog71 and is licensed AGPLv3
Mob code is based on this repo https://github.com/CasimirKaPazi/mobapi


Skybox Mod
----------
* Code: LGPLv2.1

Copyright (C) 2017 - Auke Kok <sofar@foo-projects.org>

Contributors:	
    sofar
    LoneWolfHT
    auouymous
    Maverick2797

* Artwork (textures):

Sky: CC0, Droog71
Planet: CC0, https://opengameart.org/content/planet-0


Mesecons
--------
LGPLv3
CC-BY-SA-3.0

https://github.com/minetest-mods/mesecons

Hawk777 	Code for VoxelManip caching
Jat15 	Various tweaks.
Jeija 	Main developer! Everything.
Jordach 	Noteblock sounds.
khonkhortistan 	Code, recipes, textures.
Kotolegokot 	Nodeboxes for items.
minerd247 	Textures.
Nore/Novatux 	Code.
RealBadAngel 	Fixes, improvements.
sfan5 	Code, recipes, textures.
suzenako 	Piston sounds.
Uberi/Temperest 	Code, textures, documentation.
VanessaE 	Code, recipes, textures, design.
Whiskers75 	Logic gates implementation.