Get Aliens versus Predator Classic 2000 for Free

Rebellion has rolled out another free gift in celebration of its 30th anniversary (thanks Ant). According to the Rebellion Shop, everyone is now entitled to a free copy of Aliens versus Predator Classic 2000 on Steam, a savings of $1.24 over the game's current sale price. Here's word:
As part of Rebellion’s 30th Anniversary celebrations, you can get a FREE copy of Aliens vs Predator Classic 2000 for PC/Steam when you sign up to the Rebellion Shop mailing list below and redeeming the code. Limited time offer, one per customer, subject to availability.