Conclusion A “Tekken 5 highly compressed ISO” refers to a significantly reduced-size replication of the original PS2 disc image created by recompression, removal of data, or other repacking techniques. While such repacks can be attractive for storage and bandwidth reasons, they carry substantial risks: broken gameplay or compatibility, quality loss, security hazards from untrusted downloads, and—importantly—serious legal and ethical issues around copyright. Where possible, choose legal alternatives (official re-releases, playing original media, or creating authorized backups) and follow safe, preservation-minded practices.
A: No. The compression only reduces the file size of the container. Once extracted, the ISO is identical to the original game disc, meaning no quality is lost in graphics or sound. Tekken 5 Highly Compressed Iso