According to an article on Reuters, Nokia says close to one million users have registered on the new N-Gage platform, up from 400,000 last October. October was of course the month that the first compatible phones started to be sold with the N-Gage client pre-installed, which implies that pre-installing the client is essential to getting people to use the service. Even more compatible pre-installed models should be appearing over the next few months, starting with the E75.