In need for a few beta testers!

[Hydraa]

I don't see a way for a derelict ship but there might be a way for a you to have a derelict planet show up with technology.

There is a planet - created event (alas no example of how to use in the file). You might be able to choose the type of planet and create a new planet that has a higher chance of ruins.

A lot of ifs in this one. Also I have never seen a stellar manip created planet start with ruins so creating planets may go thru a different process then when the galaxy is made.

You can have a 'derelict ship' found on a planet when the map is generated that can be found with colonizing (just a ruin of a different name)