Dark Horizon

The game takes place circa 100 years prior to Tarr Chronicles. The game is set in a fictional galaxy called Enosta, which is under the invasion of a malignant entity simply known as the Mirk. The player is a member of the Guardians, a society of people partially infected by the Mirk, who are attempting to construct a structure to contain the entity from wiping out rest of the galaxy, called the Light Core. The player is assigned to defend the Guardians from attack from the Mirk and ultimately finish construction of the Light Core.

Dark Horizon plays similarly to its predecessor. Players can now switch between 2 unique fighting modes; Shadow mode briefly turn the player's starship invisible, while decreasing firepower and speed. Corter mode sharply increases the player's offensive capabilities, but will constantly drain the player's shields until deactivated. The usage of these modes is determined by a 'cooling' system; If the player's starship is cooled down enough, Shadow mode will be activated. The opposite is true for Corter mode.

The game received "mixed" reviews, more so than the first, according to video game review aggregator Metacritic. IGN called the game "flawed" and "almost unifinished", but praised the graphics improvement from Tarr Chronicles - although GameSpot criticized the graphical design, calling it "very dark, even for deep space". Gamespot also criticized the confusing storyline and level design.