As far as finite resources are concerned, you can find similar gameplay in VGA Planets 3.0, an old DOS game. Since this was pay-by-email though, you'd have a hard time trying to get it running with an opponent unless you configure a freeware AI program (though they exist).
I'd recommend looking up Nu Planets
, which is a modern clone of the game.
For the combat (playback) system, its based on a number of references, but is mostly original work (the mechanics, layout and logic). It's not that distant from an automated version of SolarWinds: The Escape
, though in a drastically different game.
Hopefully there aren't games exactly like what we're doing. We want for the game to look inspired by DOS (retro) titles, all the while leveraging modern UI and usability advancements.
We're shooting for playtests later this year, during which we'll have a number of interested people testing the gameplay mechanics. If you're available then, why not take a peek and see for yourself how it plays out?