I've made a version of Walter Bright's 4X Ur game "Empire" re-coded in Micro Color BASIC for the TRS-80 MC-10. It's for two players. The control is by arrow and Enter key and Yes or No prompts. Running into enemy units initiates combat or other actions, such as repairs. My re-code is based on a description of the game play and unit stats found here: https://web.archive.org/web/20210418112142/http://www.catb.org/~esr/vms-empire/vms-empire.html
I think I have all the basics of combat working. In brief, you have a 50/50 chance of doing your strength ("Str") worth of "Hits" damage to an opposing unit.