Maraxsis doesn't lock promethium and science productivity research behind its new science packs.
Small changes concerning balance, gameplay, or graphics.
Cheeky request but any chance you could also do the same for the Tenebris that also gatekeeps promethium ? Thanks either way,
Link to the mod in question https://mods.factorio.com/mod/tenebris
This is now done, I've done the same mod for tenebris
https://mods.factorio.com/mod/no-tenebris-gatekeep-promethium
