In Fruit Ninja, a critical will give extra points in all modes except Zen. When a critical happens, the screen will flash white, there will be a long blue slice on the fruit (which flies away quickly), and text will show it happened. The chances of performing a critical is random. Criticals are normally worth 10 points, unless the Shiny Red is equipped.
The sound produced by a critical slice is also heard when a player slices a fruit-bomb, which can be seen when the Smoothie Spirit Bomb is activated and being upgraded to level 3 in Fruit Ninja Frenzy. He/she also scores 10 points as bombs are worth 10 points under this condition.