Xenosaga I & II is a 2006 role-playing video game co-developed by Monolith Soft and Tom Create, and published by Namco for the Nintendo DS. A spin-off of the Xenosaga trilogy and forming part of the Xeno metaseries, Xenosaga I & II retells the events of Xenosaga Episode I and Xenosaga Episode II while expanding on its characters and narrative. Displayed from an angled two-dimensional perspective, Xenosaga I & II makes use of a turn-based battle system with elements carried over from the main Xenosaga games.