Infinite Space

Infinite Space (無限航路, Mugen Kōro) is a 2009 science fiction role-playing video game with space simulation and real-time tactical role-playing elements, developed by Nude Maker and PlatinumGames and published by Sega for the Nintendo DS. It was the third of a four game publishing deal with Sega, and was released in Japan on June 11, 2009, in North America on March 16, 2010, and in Europe on March 26, 2010.

A series of short films were also produced by anime studios Gonzo and Production I.G to promote the game, premiering at the 2008 Tokyo Game Show.

Plot
Infinite Space contains themes from the novel Childhood's End by Arthur C. Clarke. The plot is divided into two main storylines; both are centered around Yuri, a starship captain-in-training, and take place ten years apart.

The game is set tens of thousands of years in the future, when mankind has spread across several galaxies. While faster-than-light travel using "inflation inverter" engines is the standard for all spaceships, ancient constructs called Void Gates are necessary to travel wider distances that would still take years to cross. Ruined, inactive Void Gates called Dead Gates can also be found, but are seen as nothing more than scientific curiosities. Infinite Space focuses on Yuri's quest to discover the ultimate purpose of the Epitaphs, artifacts scattered throughout the universe.

Most of the game takes place in two galaxies: the Small Magellanic Cloud and the Large Magellanic Cloud. In the first part of the game, which takes place in the SMC, Yuri becomes aware of the Lugovalian Empire, a very large and powerful intergalactic empire, which is ruled by an iron fist by Emperor Taranis. Learning of their desire to conquer the SMC, Yuri tries to coordinate the galaxy's forces for a defense, but they quickly fall to the Lugovalian threat. In the second part of the game, or ten years after the fall of the SMC, Yuri again tries to coordinate the defenses of the LMC amidst an impending Lugovalian invasion.