Originally marketed as part of the "Promo Pack" for the 4th Edition's Kickstarter, the Promo Pack was split into 6 "Expansion Packs", which Game Salute has been slowly releasing to retail.
4 Alien Tech Cards (for use with Alien Frontiers)
3 Faction Reference Cards
New Gaia Engineers
Proxima Centauri Sch.
2 Agenda Cards (for use with Alien Frontiers: Factions)
2 Blank Alien Tech Card
1 Blank Agenda Card