Many modern soundtracks use alarming and repeating bursts of sound to signal that the player is in a dangerous environment or that a big event is about to happen. This has become a very effective method in the last few years and can be found in most horror, thriller and action games.
Ominous Pulses is a collection of 15 of these tracks across multiple genres - horror, sci-fi, orchestral and exploratory games.
All tracks are perfectly looped (no pops or dropouts) so can be faded in and out as required.