The campaign, which was planned and bought by MEC Interaction, will feature ads in the top right-hand corner of the , which will peel down to reveal details on the Wii console, which launched in Europe on December 8.
The ads are aimed at 15- to 34-year-old computer game enthusiasts who use MSN and Windows Live packages. According to Microsoft, it is the first time that peel ads have been used on the MSN Homepage to promote a product.
Katy Adelson, digital marketing manager at Microsoft Digital Advertising, said: "This campaign shows that premium technology brands such as Nintendo are embracing online and understand its power in the marketing mix.
"The campaign has particular importance as it highlights the creative use of the MSN Homepage and an integrated use of MSN and Windows Live services."
The MSN peel ads are part of a wider national outdoor and TV campaign for the Nintendo Wii.
The Wii is the manufacturer's next generation console which is competing head-to-head against Sony's PlayStation 3 and the Xbox 360.
Wii has been on sale in North America since November 19, where it is expected to shift 4m units by the end of the year.
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