When you successfully invade and capture an alien colony, there is a chance that you will learn some of their technologies that are unknown to you. In fact, this is a great way to accomplish “research” by conquest!
In particular, there is a 2% chance for each factory captured that you will plunder one of the victim’s technologies. This is now working in Java MOO, as evidenced below.
With this, the code for invading colonies is basically complete. I’ll probably start working on the planetary bombing or sabotage features next.