Nightork Adventures (Steam key/Region free).

http://store.steampowered.com/app/493780/
"Everburning battles between light and shadow,
clanging through the time,
destroying even the most beautiful meadow,
the song of war has no sense and has no rhyme."
Book of Tears, discovered 17 years ago in the Zunkara sector, age: unknown

For centuries, there was peace in this region of the universe. But dark shadows appeared at the border of this galaxy. Some call them angels, others call them demons. You are an ork from the honourable Nightork tribe, piloting your well proven Warg XJ-85 spaceship. You don´t know what the angles or demons are, but a few weeks ago, they attacked in the Darharra sector. Planet Brog is under heavy siege now. You have to free this planet and save many lives. You travel with your ship to planet Brog...

Nightork Adventures - Beyond the Moons of Shadalee has the following features:
Pilot your spaceship through procedurally generated dungeons
Fight against evil demons, to save the galaxy in 30 missions
Build your own levels with the included level editor
You can shoot projectiles in three different colors: red, green and blue
Each enemy ship has a specific color
You have to complement the enemies to white color
E.g. if an enemy is yellow, shoot it with blue projectiles