Factorio: Space Age continues the player's journey after launching rockets into space. Discover new worlds with unique challenges, exploit their novel resources for advanced technological gains, and manage your fleet of interplanetary space platforms. For more information about what comes with the expansion, check out our Space Age content page.
I just straight up can’t buy it without getting a gog account (or going the steam route which is rather not for DRN reasons) because humble just flat out refuses to verify any and all purchase attempts…
You could just buy it direct from their site