A massively missed opporturnity, as this game fails to provide anything bright, aside from it's clear sound and ok look.
Shogun's in-game controls are off key. The only time when the controls are near good is when you are at the menu screens. Even then, you'll find yourself double tapping. The camera angles during the on screen fighting don't really help. You can either choose to zoom in on one area of the battlefield, or see a total over view of the map, (thus the characters and everything else will be small; yet visible). You'd expect that the touch screen would make for an easy substitute for drag/point/highlight your units and send them into battle, but it is far from enjoyable on this game. You will find yourself frustrated and aggravated that your units do not respond well to your directions, and more frequently than not, will arrive "off-point" from where you want them to settle.
Another area that was really affected, is when you have the 3rd person view of aiming a cannon or giant arrow launcher to shoot down an opposing boat or castle. When is simply a drag and aim motion the DS is again, heavily missed and off target. More so than the in-field fighting.
Controls alone are not the only thing this game suffers. There is no real pure story. You do get a summarization of your progression after you take over certain territories, as you would in the game RISK. But nothing more...no cut scenes, no images, no CG. Just 1 - 3 paragraph's that sum up your acquisition of land that expanded your army.
As for multiplayer, it will be hard first of all to find more than 1 person with this game in the nearest vicinity around you. This game requires that 2 people have a copy.
The sound of the game is captured pretty good, you do hear the sword clanking and the sound of agony and pain from the warriors in combat. And the graphics are ok, considering it is a 1st gen DS game.
All in all, this game is a poor example of an RTS on the Nintendo DS. Purchases aside, rentals beware as well. Even if the game lands in the clearance, there is no sense of joy in this game.