Some downloads are simply "blobs of white noise" or fake setup files that do nothing but display ads or steal browser data.
Searching for ultra-low file sizes often leads to dangerous websites. Sites promising a 200MB version of a 16 GB game are frequently used as bait for: Call Of Duty Black Ops 2 Highly Compressed 200mb
Compressing a 16 GB AAA title down to 200MB—a 98% reduction—presents significant technical and security challenges. The Reality of Game Compression Some downloads are simply "blobs of white noise"
Videos may be downscaled to nearly unwatchable resolutions, and audio may be compressed until it sounds like static. Call Of Duty Black Ops 2 Highly Compressed 200mb