A good RTS game for the DS, but still leaves a bit to be desired...
There are two ways to achieve victory in this game, firstly you can do away with the enemy's villagers/home or there is the option to build a "Wonder" knock off called an Emelias tower which grants victory in time.
YS is a solid game with a good multi-player, an average scenario option and a hell of a lot of text but is lacking polish, the game could have benefited heavily from 1-4 player MP/SP, a map editor and more refined controls.
Overall if you are looking for a RTS game for your DS, this game will tie you over until (hopefully) the true potential for the genre is realised, YS is a good game but nothing too special.