In Sonic the Hedgehog Triple Trouble, the Time Bonus is a Monitor item which is indicated by a red and blue-colored clock on the Monitor's screen. It can be only found in platform types of Special Stages. Breaking a Time Bonus Monitor will reset the time limit of each of the Special Stages to a full one minute and thirty seconds.
Sonic the Hedgehog 4: Episode I
In Sonic the Hedgehog 4: Episode I, Time Bonuses are power-ups that appear exclusively in the Special Stages. In this game, they resemble yellow and orange balls that float in midair by themselves. When obtaining a Time Bonus, it will add five, ten or fifteen extra seconds to the player's time limit in the Special Stage. The number of seconds they add are written on their surfaces.
In Sonic Generations, Time Bonuses are found in several of the Challenge Acts with time limits. In this game, the object resembles a typical mechanical analog stopwatch and floats in midair. When touched, the Time Bonuses will decrease the time recorded for how long the player has been in the Challenge Act, thereby giving the player a better chance to achieve a high Rank for the act. The amount of time they decrease depends on their color: blue Time Bonuses decreases the time by five seconds, yellow ones by ten seconds and the red ones by twenty seconds.
If the player obtains a Time Bonus that would decrease the timer below zero, the timer will stay at zero but will be frozen for the remaining difference (ie. if the player receives a -10 timer while the elapsed time is at 0:05:00, the timer is reduced to 0:00:00 but will not start counting for five seconds).
Sonic Lost World
In the Wii U version of Sonic Lost World, Time Bonuses appear exclusively in Hidden World Act 2. In this game, it consists of a blue stopwatch within a blue ring. When obtained, it adds ten seconds to the Zone's countdown.
There is unused item in Sonic Adventure that a bears great resemblance to the Time bonus. However, it is unknown if it has the same purpose.