As per site rules, you're expected to have no multiple wins, and to have activated all wins on your account.

Freshly revealed keys from Groupees, though they were from a bundle from late last year.

"Blast rocks, drill tunnels and force your way through every mountain. At the beginning you have enough time and no major problems. Once the TNT charges are placed you can start the blasting to create the tunnel entrance. The excavated material will be loaded by a shovel dozer on a dump truck and transported to the storage site. As soon as the entrance is cleaned up the huge tunnel drilling machine will march up. But this monster can only start operation if it is supplied with sufficient building material. This has to be delivered by crane and train. You have to steer all vehicles like the maintenance van, crane, tunnel drilling machine or the fire brigade.

That’s how you’ll create the building site piece by piece before starting the tunnel itself. You’ll need to pay attention to many factors. The tunnel drilling machine has to be kept supplied with building materials. It’s important that you don’t lose track of your tasks. Frequent visits to your control room will be crucial.
Features
Detailed scenery in 3D graphics
Intriguing, ongoing story
Weather effects, day / night shift
Various tasks
Long lasting fun factor
Free choice of the level, once you have accomplished all tasks
Intuitive control via keyboard and mouse"