HD Xtreme included two advanced PS2 utility software - HDAdvance 3.0 and USB Extreme for converting PS2 games to HDD and running the games directly from the HDD. Actually, PS2 can read data from a HDD much faster than it can read from a CD or DVD. By using HD Xtreme, you can run your PS2 games from the HDD/USB HDD directly and reduce the game loading times sharply. Since all your games are stored in one HDD, you do not need to change discs each time when you want to play different games.