Free Up SSD Space,
Without Losing Performance.

Absolutely not! This is the biggest misconception. The compression (write) process happens only once per game. While you're playing, the system only performs "Read" operations. In fact, since your files are now smaller, the physical data read from your SSD decreases, actually reducing the load on your drive.

The LZX algorithm runs extremely light on RAM. It doesn't load files all at once — instead, small chunks are decompressed on-the-fly as the game engine requests them. This process takes mere milliseconds even on older CPUs, so there's zero negative impact on your in-game FPS or loading screens.

While our core technology shares the same solid foundation (Windows LZX), Game Compressor was built from scratch for a modern user experience. Unlike older tools, we offer automatic compression, smart pause during gameplay, multi-platform detection, and active Early Access support — a true "set-and-forget" experience.

This is entirely dependent on the game developer's choices. Some studios heavily encrypt or pre-package their game files within their own engines. Game Compressor scans these locked files but can't extract much extra space. However, in games with thousands of loose files, you'll reclaim dozens of gigabytes within minutes.

Game Compressor draws its power directly from Windows' NTFS file system. Since Steam Deck uses a different file system (Linux/ext4/btrfs), it currently only works on Windows 10/11. Steam Deck users running Windows are fully supported.