The Wii Software system for buying downloadable content for your games has been detailed, using the rather pricey example of Final Fantasy Crystal Chronicles: My Life as a King.
In order to access the in-game store you have to grab an updated version of the game containing it from the Wii Shop, according to the Wired blog.
Once this is done, a "Download additional content" option will be added to the in-game main menu. This will automatically connect you and list the available extras you can buy.
Select an item and it will tell you how many Wii Points you have, and how much you will have left after buying the item. It will also tell you the number of memory blocks you have free and how many you will have left afterwards.
Download the item and it should appear in-game as soon as it has finished transferring.
This is encouraging, then, more so than the price of the content in My Life as a King. The game is the most expensive on the Wii Software service at 1500 Points (GBP 10.50 / EUR 15 approx), and the total cost of the DLC is almost as much.
To get at the non-human Crystal Chronicles races bizarrely not included - Lilty, Selkie, and Yuke - you will have to play 300 Points (GBP 2.10 / EUR 3 approx) for each, or 800 Points (GBP 6 / EUR 8 approx) for all three.
Then, if you want a change of clothes for your King or your assistant Chime then you will need to spend 100 Points (GBP 0.70 / EUR 1 approx) each.
Perhaps you want a Gorgeous House, too - 100 Points (GBP 0.70 / EUR 1 approx), please. What about a Sacred Shrine to buff your warriors? 200 Points (GBP 1.40 / EUR 2 approx), please.
Final Fantasy Crystal Chronicles: My Life as a King has you building and managing a castle and its surrounding town, sending adventurers out on quests and introducing taxes to gather more money to expand your settlement.
It was one of the launch titles on the Japanese Wii Software (WiiWare) service released on 25th March. There is currently no news on when the service will be available in Europe.
Pop over to our Final Fantasy Crystal Chronicles: My Life as a King gamepage for a trailer showing what to expect.