Playing the vanilla Space Age campaign in multiplayer using the Factorio discord / Reddit community "monthly map" seed. Last night we had up to 11 players joining to help out, on Nauvis as well as Fulgora and Vulcanis. I'm pretty impressed how deeply the team integrated Space Age into the existing tech tree that we're all so familiar with. In order to reach all the benefits we've been used to having for endgame, you'll need to go to all the planets.

It's also been nice to see that the rocket launch requirements have been slimmed down so that 1) you can easily use rockets as mere transport and 2) so that multiple players in multiplayer can launch their rockets and not break the bank.