THE YGGDRASIL HOMEWORLD
The Yggdrasil race are able to colonize only a single planet type, the rift planet. No other race is able to colonize rift planets.
Yggdrasil worlds produce no income or resources and their only means of obtaining them is to siphon resources from captured resource asteroids or to drain resources from enemy colonized worlds. These resource capturing processes are used by the mothership but are done much more effectively through the use of lectoids.
Rift worlds open produce intermittent fields that interfere with most ship abilities and generate gravitational vortices that sporadically prevent the launch of strike craft as well. Additionally, gravitational distortions negatively impact weapons targeting and the immense gravitation force of the rift draws ships in towards the planet when they approach too closely. Intense radiation fields almost insure the destruction of any vessels approaching the surface of a rift planet.
Due to their extra-dimensional nature, Yggdrasil are unaffected by these phenomenon.
The only means to siege and seal a rift planet is to recover one of TEC produced singularity siege ships.
