Factorio but you build your factory in a restricted space that teleports yourself, the platform, and everything on it to a new and uncharted planet in an unknown corner of space, time and the universe while constantly under attack from enemies. This mod increases the difficulty of factorio by making construction harder and making biters a more significant threat, resulting in a unique experience of factorio'ing in a tight space and under pressure, almost like a tower defence game.
Warptorio2 but the planets thing is a standalone library that can be used by anyone to make and work with planets, surface templates, and simple automation and management of surface-specific events (e.g. only raised if an entity is built on that planets surface) and chunk generation.
FTL but it's actually Factorio-er Than Light. Factorio but the player is also a factory. Build a titanic space ship out of special rooms, with each room adding to the overall shape and function of your starship. You then build your factory throughout these rooms. This mod changes up factory building by giving you infinitely expandable space but with unique limitations. *Coming soon: Control a fleet of ships and space stations and battle the biters procedurally generated alien(?) starships, and something about planets*
Factorio but everything must be crafted using the power of SCIENCE! ... the science of Factorio. Procedurally generates science-pack energy tokens that are added to the ingredients of every recipe that is unlocked by said science pack at the relevant level, so it should be compatible with most other mods.
Factorio but instead of fighting biters with guns you're fighting a disintegrating planet with automation. There is a shadow following you and eating up planets in its wake. Build an infinite factory tower, but the catch is you cannot return to previous levels to make changes. This is based on the concept of 100 floor dungeons in RPGs. Now with Warptorio Planets