Highly Compressed Pc Games Under: 1gb

Texture Downsampling (The Visual Sacrifice): The most common trick. 4K textures are replaced with 1080p or even 720p versions. In many indie or older games, the visual difference is negligible. In AAA titles, it turns characters into blurry mannequins.
Audio Transcoding (The "Opus" Hack): High-fidelity WAV or uncompressed PCM audio is the true storage hog. Re-packers use low-bitrate Opus or MP3 files (sometimes as low as 64kbps). For a story-driven game, this ruins immersion. For a racing or puzzle game, you might never notice.
Video Stream Removal (The Cinematic Butcher): Bink video files (.bik) for cutscenes are often stripped entirely or replaced with static text summaries. This is how Metal Gear Solid V fits into 900MB—you lose the plot, but keep the gameplay.
Redistributable Pruning: Legitimate installs carry massive, redundant VC++ Redist and DirectX runtimes. Repacks remove these, assuming you already have them.