In a bid to attract more beta testers for the new GOG Galaxy desktop client, DRM free digital games retailer GOG is offering up the classic turn of the millennium shooter Aliens vs Predator for $0 for the next 48 hours.

Not to be confused with the 2010 title of the same name from UK developer Rebellion, or the 1994 title of the same name from UK developer Rebellion, the 2000 Aliens vs Predator offering was developed by UK studio Rebellion, and introduced the three playable races formula that paved the way for the more memorable AvP 2.

Interested parties can simply head over to gog.com/galaxy to sign-up for the Galaxy beta, with the promise that access to DRM free AvP will then be emailed to you.