The referral bonus gives you a Greycat STV with Electric Green paint and 5000 aUEC ingame money. The bonus is granted when you use referral code and buy pledges for a starter pack or ship (minimum $40) on the Pledge Store. The usual referral bonuses apply too, including 5000 aUEC and a point in the regular Referral Program. This bonus promotion runs until July 31, 2023