Pulse is a modification (or Mod for short) for the first person shooter game Half-Life. Half-Life won many Game of the Year awards the year it was released and its creators, Valve Software, have created three sequels since. You might be wondering, "What is a game modification (Mod)?" Well, a Mod, as defined by
ModDB, is a term generally applied to a customized (or altered) computer game made by the general public. A mod can range from a total conversion of a game with new gameplay, look and feel to some minor alterations which could include new models, weapons, maps etc. There are plenty of types and tons of styles and a mod can be anything the creators want it to be. So, on this website, you will find loads of information on Pulse.