Thanks for the answer.

Sorry to hear that. In my opinion, Ribbon World is a great challenge for Space Age, and plenty of players are already using this mode — for example: https://www.youtube.com/watch?v=_aQexrolK1M&list=PLf9aY0O5ldbKiRpzRp3XNS7CRWKL3wBuZ

Sure, that example uses a width of 128 ...

Ribbon World map generation for Space Age is barely usable.

On Vulcanus, getting sulfuric acid and coal inside the starting area that isn't cut off by lava can take up to an hour and a half of re-rolling the map seed. And even after you finally land a decent Vulcanus start, you're not done — Nauvis ...

Just to give you the full picture:
I play on the 2.1 experimental branch on my desktop, and this new run is strictly vanilla Factorio: Space Age with no mods installed.

I also have a laptop with the main 2.0.7 branch installed, but I haven't played Factorio on it since I started this new run. I ...

No, I didn't. Before starting this new playthrough, I deleted all my old save files to ensure a completely fresh start. The only things I kept were some old blueprint books.

Before starting a new playthrough on the 2.1 experimental branch, I deleted my Steam achievements using the game's built-in feature (Settings > Other settings > Delete achievements) to make the game feel fresh.

At around ~100 hours of playtime, the old achievements were restored and merged with the ...