A POPULAR PC GAME GOES MOBILE

There's no such thing as a free lunch, as economists like to remind us, but you can get something pretty close to one from a company called Free Lunch Design. It's pretty much a one-man shop—run by Johan Peitz, of Göteborg, Sweden—and it gives away downloadable games and pulls in no more than a trickle of revenue from the ads it hosts.

By far the most popular of Peitz's games is Icy Tower, which has been downloaded 6 million times since it was launched six years ago.