After K2 took over Tenchu development Acquire started Shinobido. Like Tenchu, this is also a stealth action game where Goh (aka "The Crow") is caught between three warlords. You control what happens in Shinobido by fulfilling their requests or betraying one (or all) of them.
Spike published Shinobido on the PlayStation 2 back in 2005. Sony Computer Entertainment Europe picked the game up for PAL territories, but Shinobido was not released in North America even though it was localized in English. Two more Shinobido titles, one for PS2 and another for PSP, were released in Japan
Acquire is hoping to make a new game in the series. Whether it happens or not is somewhat dependant on whale carrying birds. Endo Takuma, the President of Acquire, heard people were interested in a new Shinobido game over Twitter. The company is asking fans to keep the discussion going by using the #acquire_do hashtag. If enough people request a revival, Acquire will make a design document for a new Shinobido game.
Recently, Aksys picked up an Acquire title, Gladiator Begins. Perhaps, Aksys will grab the rights to Shinobido if Acquire’s Twitter-paign picks up in Japan.