Do I need Space Age?
Yes. Factorio 2.0.77 + Space Age DLC.

New game or old save?
New game only — the pack changes map generation, planets and the tech tree.

Can I update the other mods from the portal?
No. Versions are pinned together; portal latest pulls the 2.0/2.1 branches and breaks the set. Disable auto-updates.

Where do the dark nights come from?
From our own sb-pitch-black-nights, pulled automatically as a dependency.

Can I remove mods I don't like?
Not recommended — the set is tested as one build. Removing planets, Rampant or a graphics library breaks loading or the pack idea.

Single-player?
Playable, brutal. Built for 2–4 player co-op, 150+ hours.

Factorio 2.1?
No. 2.0.x only.

License?
MIT. Every third-party mod stays property of its author (see mod list).