These are small installers (approx. 18MB) that download game data in the background while you play. Pros: You can start playing in minutes.
– Some users upload untouched client installers (verify checksums for safety). Wow Cataclysm Client 4.3 4 Download
Zero in-game lag caused by background downloading. Instantly ready to play. Cons: Takes longer to complete the initial download. These are small installers (approx