There was a bit of discussion over on Reddit of a game called "Cosmic Conquest", printed in an edition of Byte magazine, that is supposed to be the first space RTS. That was entirely written in Forth on the Apple II.

A few of us managed to resurrect the code, and I've managed to get it more-or-less working as intended. Once I get time I'll tidy up the bits I wrote so they're fit to show in public.

Here's a video of it:

https://gjcp.net/conquest.mp4