FiringRange is a Descent 3 single-player level designed for multiplayer training from [LL]Atan. It is a very scripted level which could be a multiplayer trainee level.
Storyline: "After the defeat of the PTMC several of its mines were sold off to other smaller mining companies. These small operations often had no protection against the robotic virus and many mines fell to the robots. The 'Newhall Extraction Partner
"You might have played Unreal Tournament where a mode of play is called Domination and bots compete with human players to control certain checkpoints. The game is very fast in UT and I thought I could give D3 a Domination style level. The level took
A single-player level featuring "lots of eyecandy, a train puzzle, nasty robots, and some challenges at the end." Requires "careful inspection" of every room.