Genestealer was the second expansion for the original Space Hulk game. 
Genestealer introduces the realm of psychic powers and psykers into the Space Hulk board game. Apart from the complex card-based psychic system, the rule and mission books contain background and rules for Genestealer Hybrids, Grey Knights and new weapons as well as two new missions. The new background and missions refer to the Dark Angels chapter, introduced in Deathwing.
Contents of the Box
Genestealer (Space Hulk Expansion)
- Behind Enemy Lines
- The Final Assault