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Here is why that story usually ends in a "Game Over" and how you can find a better path: The Risks of "Highly Compressed" Downloads left-4-dead-2-download-pc-highly-compressed
Many sites offering "highly compressed" versions of popular games are fronts for malware, spyware, or ransomware. Your PC's security is worth more than a few saved gigabytes. Instead of risking your PC, you can get
Extreme compression requires your CPU to work overtime during installation. What should take minutes can take hours, often ending in "CRC errors" because a single bit was lost during the squeeze. A More "Helpful" Way to Play Instead of risking your PC