Nintendo has announced a surprise game at the Jump Festa event. It is revealed that The Pokémon Company is collaborating with KOEI-Tecmo to develop a new game, titled ポケモン＋ノブナガの野望 Pokémon + Nobunaga's Ambition. The game will be released for Nintendo DS, and its genre is Simulation, or better described as Turn-Based Strategy RPG. It is tentatively set for release in Spring 2012.
In this game, each characters have a pokémon as their partners. For example, Oda Nobunaga with Zekrom, Takeda Shingen with Groudon, Uesugi Kenshin with Mewtwo, Akechi Mitsuhide with Articuno and Oichi with Jigglypuff. The main character is selectable between male or female avatar, and their starter pokémon appears to be Eevee.
Official website http://www.pokemon.co.jp/ex/ranse/
More information has come up with a trailer that has been posted in Youtube. The game's setting is an alternate world of Sengoku set in the ランセ地方 Ranse region, and it involves conquering 17 castles which will then trigger a legend of the region. Toyotomi Hideyoshi is also shown partnering with Infernape.
oichi and jigglypuff T___T