i guess this would count as ‘content’ and I understand it’s not a route. As a newcomer I’ve a lot to learn and I think any responses to this thread are going to be explaining to (me) the uninformed why this wouldn’t be possible. My basic contention is that the scenario editor is a rather ungainly piece of product. I know that there are many with lots of experience that derive a lot of pleasure in mastering it. However, the ability, fairly simply, to add your own choice of AI trains moving or otherwise to Quick Drive sessions would be interesting. Even the ability to build Quick Drives beyond what exist in the drop downs for each route would potentially be a useful add to the game. It might even allow the building of more complex scenarios. Now, changing the existing Scenario Editor would likely be a huge undertaking and at least a major rewrite. So my thought was could an external program exist that would read the Train Simulator content and then allow, through a graphical interface, the adding of content, the setting of points and signals for a route? It might also be a lot faster in execution in that it would be reading, say, a digital map, of the content rather than moving ‘inside’ the content as the existing editor does. Once complete the code would be checked and generated back into the users content. Other than presumably not needing any change to the existing system (presumably inserting a scenario could be like downloading one) the external program (other than the resulting generation) wouldn’t need to be 32 bit or tied to the existing program. You get some of this concept within flight simulation programs for example. The ability to schedule and insert AI traffic into the program. That I agree is easier, but fundamentally the idea of external add ons to legacy code isn’t that ground breaking. This idea may have been suggested and debunked before for which I apologize in advance. So what basic concepts am I missing?