Spinoffs
On March 1, 2007, Sting released to their Sting Station download service a platformer starring Nietzsche, titled Nietzsche's Treasure Hunt (ニーチェの宝探し, niiche no takara sagashi?). The game features Nietzsche swimming through aquatic levels and collecting treasure.
Not long after the announcement of the PSP remake of Yggdra Union, a larger mobile phone game effort was released called Yggdra Unison: Beat Out Our Obstacle (ユグドラ・ユニゾン, yugudora yunizon?). The game features a territory conquering system similar to that found in games like Emperor: Battle for Dune. There are eleven armies vying for 36 territories in the game, each taking a turn in which they can attack a neighboring territory, potentially conquering it and thus increasing their presence on the continent. In battle, characters move around in real time, and when two opposing enemies encounter each other, a skirmish more similar to those found in Fire Emblem is initiated, with the units attacking each other. With proper timing a Unison attack can be activated, in which all allies within a circular range of the skirmish will also engage. The cards featured in the original Yggdra Union are also activated within skirmishes. A Nintendo DS port of this game has been released in Japan in December 2009.
JaJa's blog had featured discussion and photos of Yggdra Unison (code-named "YZ") for several months before the official announcement. The game was officially announced at the end of November 2007, and released in early December of that same year.
In January 2008, Sting released two more download games, Milanor Dash! (ミラノダッシュ！, mirano dasshu!?) and Yggdra×Quiz×Union (ユグドラ×クイズ×ユニオン, yugudora×kuizu×yunion?), the former being a falling-item collection game featuring Milanor, and the latter being a quiz game featuring questions about the game's story and mechanics. In May 2008, yet another download game was released, Yggdra Puzzle (ユグドラ・パズル, yugudora pazuru?), a falling block puzzle game.
Read more about this topic: Yggdra Union: We'll Never Fight Alone