UltraStar is a excellent free karaoke game clone of the popular Singstar ps2 game. It features special AI that allows you to test your singing capability and voice quality. Get your friends, plug in your microphones and have great fun singing together! The computer will test and evaulate your voice and check how good you sing while comparing it to the original song to see if you are too low or maybe to high. The visual effects create much more entertainment value then a simple karaoke machine. UltraStar will also let you compete with your friends so each player will get their own score. You can compete with each other trying to get into the top 10 using different difficulty levels. Multiple display is also supported allowing 6 players to sing at once. The more creative users can use the song creator and converter to make their own ultrastar karaoke songs! Over a thousand songs are available from the internet so have fun!