An enhanced version of the PlayStation 2 game FlatOut 2.
It increased the number of cars in a race from 8 to 12.
It added 5 new single player and 2 new multiplayer modes

FlatOut Ultimate Carnage lifts destruction racing to a whole new level of bone-breaking slaughter. FlatOut Ultimate Carnage is arcade destruction racing at its best and most extreme with real world physics, three different game modes and offering players a wide variety of online and offline multiplayer options.