I'm a developer that has been working with coding since mid 1980's. I have both Outpost and Outpost II on DVD somewhere in storage. I spent many hours late 90's and early 2000 playing these. I found this turn based game and installed it. I like it and want to help out. So, I know C, I know Java extremely well and I know Claude Code fairly well. I think I can help. I love the turn-based genre games too. I've cloned the code, compiled it and run it. I have started a fork repo at github.com/larrydgray
My first thought when playing it was, "sound!"
Sourcing space-ambient music without licensing headaches
OpenGameArt.org ? filter by "Ambient"/"Space", most tracks are CC0 or CC-BY, made specifically for games like this.
Kevin MacLeod (incompetech.com) ? huge catalog, CC-BY (just needs attribution in your credits, which this repo already has a spot for).
Sonniss GDC bundles (sonniss.com/gameaudiogdc) ? free, no-attribution-needed SFX/music packs released for GDC each year, heavily used in indie/fan games.
freesound.org ? best for one-shot SFX (mining, construction, alerts) rather than full ambient tracks; check each file's specific CC license (varies per upload).
I am thinking Mars maybe fading in and out. Maybe timed with certain events or just randomly sometimes. But adding a few others that theme well.
And definitely female AI voice. Kokoro-82M is what Claude recommended. Why it fits best here: both the engine and all 54 voice presets are Apache-2.0 licensed ? one license covers everything, so there's no per-voice license auditing needed before you commit generated files into a BSD-3 repo. It's tiny (82M params, runs fine on CPU, no GPU needed) and currently rates highest quality (MOS 4.2) among lightweight local TTS models, with several American/British female presets (af_heart, af_bella, bf_emma, etc.) that would suit a game advisor/CMO voice.
And some beginning prioritized UI sound effects and event sound effects.
Let me know your thoughts. thanks.