Harbinger is an RPG that is set in a science fiction universe. The entire game takes place aboard a space ship, with a simple system used to move around from one area of the ship to another. Like the aural and visual trappings, gameplay is rather simplistic, with a limited combat system, basic role playing elements, and a rather lame storyline.
While the game does offer three character classes, Human, Gladiator and Culibine, they don't differ all that much. Each has its own set of gadgets, and the Culibine has a different melee attack, but they all play about the same. All of the classes have a ranged attack, and this is what you end up using most of the time. The melee attack is ineffective against most foes, so combat boils down to continually pounding away at foes with your ranged attack, moving away from them as they get closer to your character, and repeating the ranged attack until they are dead.
There are a number of items to find and buy in the game, but unlike almost every other RPG on the market, this isn't a very fun aspect of the game. While it is necessary to buy health packs, and there are some items worth buying in the game, there isn't the same level of excitement in obtaining weapons and armor that you find in most RPGs.