Save the earth

Aliens go to the Earth.

You must stop them. Killing all aliens spaceships before they reach the Earth.

Programming by Angel D. Fernández González. http://about.me/angeldfg

Soure code: https://github.com/angelfg/SaveTheEarth

Graphics:
* Planet textures: http://www.solarsystemscope.com/nexus/textures/planet_textures/
* SpaceShip: http://opengameart.org/content/racing-ship-2d3d (Jonathan Wayman)
* Ufo: http://www.3dcadbrowser.com/download.aspx?3dmodel=14165 (9KILLA2CALI5)
* Radar: http://opengameart.org/content/space-assets (priest865)
* Earth Texture: https://static.pexels.com/photos/2422/sky-earth-galaxy-universe.jpg
* FieldStar: https://upload.wikimedia.org/wikipedia/commons/8/80/Hyades.jpg
* Shoot: www.iconarchive.com/show/captiva-icons-by-bokehlic...
(bokehlicia)
* Particle Effect: https://github.com/libgdx/libgdx/wiki/3D-Particle-...

Music and Sounds:
* Shoot: http://www.freesound.org/people/211redman112/sound...
(211redman112)
* Final Sound: http://www.freesound.org/people/cristianob_/sounds...
(cristianob_)
* Applause: http://www.freesound.org/people/Littleboot/sounds/... (Littleboot)
* Bomb: http://www.freesound.org/people/dkmedic/sounds/104... (dkmedic)
* Music Space Trip: http://www.dl-sounds.com/royalty-free/space-trip/ (DL Sounds)