The full version of Prey (2017) is frequently included in the Xbox Game Pass for PC library. This is the most cost-effective legal way to play.
Instead of risky downloads, you can access the game safely through these official channels:
Prey is a first-person sci-fi action game developed by Arkane Studios. You play as Morgan Yu aboard the Talos I space station, fighting an alien outbreak using high-tech gadgets and "Neuromod" powers. Requirement Minimum Specs Recommended Specs Windows 7/8/10 (64-bit) Windows 7/8/10 (64-bit) Processor Intel i5-2400 / AMD FX-8320 Intel i7-2600K / AMD FX-8350 Memory Graphics GTX 660 2GB / Radeon 7850 2GB GTX 970 4GB / R9 290 4GB Storage 20 GB available space 20 GB available space
Prey has been featured as a "Free Game of the Week" on the Epic Games Store in the past. It is worth checking their weekly rotations to see if it returns.
If you are looking for a free version of (2017) or the original 2006 game, it is important to distinguish between legitimate offers and high-risk "free download" sites. Current Status of "Free" Downloads