Nearly every Pokemon game manages to find its way Stateside. However, the newest game announced for Japan may be one of the few that won't get a localization. Why? Because it is a truly bizarre crossover.
Pokemon + Nobunaga's Ambition is a new game announced for the Nintendo DS that combines Nintendo's cuddly pocket monsters with Tecmo Koei's strategy franchise based on feudal Japanese history.
Nobunaga's Ambition is a long-running franchise, first released in 1983. Since then, it's seen countless expansions on multiple platforms. The Pokemon-themed game is being co-developed by Koei and Game Freak, the developers of the original Pokemon games. How the two developers plan on explaining the use of Pokemon in historical Japan is beyond us.
Kotaku managed to find a trailer. The game may be scheduled for Japanese release in 2012, but a US release seems highly unlikely. Granted, Nintendo did promise continued support for the DS in 2012, and Capcom did localize the similarly-themed Sengoku Basara series. Perhaps anything is possible.