Nintendo's latest game machine, offering glasses-free 3-D images, went on sale Saturday ahead of a global rollout, and analysts say it promises to be the world's first 3-D mass-market product.

"I'm so excited," said 9-year-old Natsumi Miyasaka, clutching her brand new blue 3DS portable that her father bought for her.

Lines formed outside Tokyo electronics stores, although they were not as long as some previous gadget launches, as Nintendo offered purchase reservations in advance.