🌐Dea Dia System (ALPHA)

SECOND ROUND OF REWORKS COMING. I put the mod in with a beta/alpha title because I wanted to be sure that you know what you get into. The test data I got from you so far will be reintegrated into the mod, and it will cause major (and necessary) changes. This will entail some buffs, nerfs and the removal of a few chains that we deemed redundant/unneeded, together with a few new systems that I did not plan on putting here originally. I did want to lock down more of the mod, but it will be done to make it better and more cohesive then it is now. I don't want to leave it in a worse state then it could be in.

Update 2026.oct.23: Surface changes have been enacted, and I am posting things on discord as it gets ready.

Some technologies that can't come back are being migrated here, some of them just have replacements from other mods. https://mods.factorio.com/mod/outer-rim

I'll try to ensure that you won't need to reset surfaces to gain access to materials, but I also don't have a real guarantee. I do apologize for this. Unique content and compatibility won't be removed. Some content has to be removed because it no longer fits, and I can't make it work. I apologize for it. I'll try to provide replacements where it makes sense or at least some migration paths. All surfaces will also need to be reset due to upgraded generation that does include better and more unique visual design.

I'm not accepting localization for this mod, because it will be wasted effort.

WHEN UPDATING FROM 0.10.0: Lemures world generation got updated, now features small lakes as a source of water. You need to regenerate the surface to get the new generation. This is the same safeguard that vanilla factorio has to not break 1.0 nauvis surfaces. I did remove some of the leftover recipes that you need to use the old generation.

There are at least two mods out there that break mine, but I do not know which ones. The symptoms:

• Cold biters stop dropping glands
• Dea Dia can not be landed on, the transitions break. Does not appear in most of my tests.

IF you have an error like this, then you have to enable cold warfare from the cold biters manually. Failed to load mods: dea-dia-system/prototype/compat/cold-biters.lua:8: attempt to index field 'cb-cold-alien-tech' (a nil value)

Adds a second smaller solar system to factorio. #The star A small withe dwarf, still has a few million years to fully cool down. The space platform you need to reach the system can't be a normal one that you are used to. There is one thing you don't have access to on the way here, so you'll have to build one specifically for this ride.

#Planet Dea Dia A resource rich gas giant that most objects in the system orbit around.

• Build on platforms suspended on top of convection currents
• only gas/liquid resources to mine
• Dedicated bot chargers from Robocharger updated
• lex's aircraft integrated for logistics. (this mod is normally OP, being here gives it some balance and a dedicated usecase)
• an entire crafting chain that I'll let you discover yourself
• if the solar array wings mod is installed, it will move to dea dia as an aerospace technology.

Status:

• crafting chain finished
• the way you land needs to be refined, I get reports that it is unintuitive. No, you don't need the editor mode to play the surface, everything is available from the start.

#Prosephina A warmer planet, close to the star. Its shallow seas are home to primitive life, most of the raw materials are tied up in the dirt covering its surface. The development stages of life suggests artificial seeding.

Technologies:

• A machine with engine productivity
• Greenhouses
• insulated pipes that won't freeze in the cold
• huge power poles
• thorium as an alternative nuclear path
• an additional tier of belt stacking

Status:

• visual aesthetic needs to be updated.

#Lemures A Frozen planet that still has some tidal heating from the gas giant and the star. While cold, patches of lava still dot the surface. Home to the cold biters, pollution is enabled. Cord biters are set to only exist here, this is a design choice to give them a place where they can be a unique enemy faction.

Technologies:

• lava based heating
• alternative lava processing
• a new lab
• everything from the cold biters mod
• a burner assembler that does not freeze
• SA atomic tank for combat, if present.

Status:

• core finalized, may receive recipe chain tweaks.

Vanilla:

• If you add it to an existing save, this mod will put you back into the "mid game", as it includes it's science packs on the promethium research. This is done to make you set up interstellar logistics to ship all the science back to nauvis, mirroring what the DLC wants you to do. That research is not essential for you to play. I know it is a little annoying, but I have nothing better for it. Most modded prometheum research already seems to just pick up all sciences by default.
• Will also follow Castra's path and add more materials to the promethium science pack.

###How I intend this to be played. This is just what I was designing around, at the end of the day you do you. Feel free to ignore this.

• Don't add mods that only add alternative recipes. This m