Okay I had some ideas for my own mod like this, but since I have zero programming knowlege I will just put them here :D

- Floating Islands: Some mineral or substance on this world causes large rocks to float through the air forming floating islands that hover dozens to sometimes hundreds of feet of the ground.
---- Bonus to physics, engineering and migration attraction, and a mild happiness bonus, but a major subtraction to build and influence cost
- Hostile Flora: The plant life on this planet seems unusually hostile or toxic to external physiology,
---- to habability, food but bonus to societ reserch
- Magma ocean: Large bodies of lava are exposed to the surface, running in large rvers from exposed volcanos or simply a large secotion of the planets core being exposed to the elements
---- Massive mineral, energy and engineering bonus, detriments to habaility and tourism
- Toxic gas: Areas of the planet are often exposed tempoaryily or permemntly to toxic gas, forcing the population to exercise extreme caution
---- Detriment to habbility, migration and happiness
- Extensive cavern system: The world is honey combed with millions of miles of tunnels going down hundreds of miles towards the core, carved out millions of years ago by the planets geological forces.
---- Bonus to minerals, energy and engineering, but detriment to build time and cost
- Titanic preadators: This world is home to gigantic monstorus creatures that soar through the sky and eat nearly everything in sight
---- Massive bonus to society reserch, but large detriment to habability, hapiness and migration (also titanic creatures may periodically attack)
- Unatural world: There is somthing unsettling about this world, explorers speak of hushed voices on the edge of hearing and things moving unexplainably. Indeed sensors do report that this world sits slightly out of sync with reality
---- Bonus to physics, and research, but detriment to happiness (Possible event chain)
- Atmospheric stimulant: somthing in the air just makes the people here so dam irritable, they go at life a hundred miles an hour and seem really high strung.
---- Bonus to millitary damage and small bonus to energy, minerals and all reserch, but -15 to happiness as everyone is just so ♥♥♥♥♥♥♥ high strung.
- Unusual seasons: Due to ths planets orbit, geology and even weather the planet goes through varying seasons which can change on the fly and cause drastic shifts in the atmosphere
---- Detriment to happiness, but random bonuses every so often
- Perfect Seasons: The weather is simply fabulous all year round, and hardly ever changes, this is truely paradise.
---- Habability, hapiness and food growth
- Mutagen: Somthing on this planet just changes people and mutations are fairly common, wheather its the food, the air or just the people who colonised it strange things happen. Don't mind the extra arms
---- Could randomly change the species genetic traits
-Wasteland: There is nothing here
---- Found on larger planets with no tile blockers but it is desolate with detriments to happiness, growth time and reerch,
- Perodic Apocalypse: Every few years this planet decides to go through a apocalypse, the tides rise, storms crack the sky, earthquakes shake the land and people die. But other than that its quite lovely.
---- Every 10 years the planet will be hit by intense storms that have a potential to kill pops and cause massive unhappiness bonuses. However it does lead to an increase in army damage and society bonuses.

What do you think :D

Very cool suggestions! Though scripts are something I can't do yet (last suggestion) the rest seems really cool and I'll probably incorporate a lot of them in the mod :).

Thanks very much!

I added some more

Also

-Gravity fluctuations: What goes up must come down, and then up, and then down and... someone bolt that thing down!
---- Happiness decrease and building cost and physics and engineering increase
- Ruined battlefield: A battle was waged here centuries ago, thousans must have died... however looters rights!
---- Bonus to army damage, society but detriment to building and other reserch
- Spaceship graveyard: A titani battle oncre raged overhead and the world is now littered with the rusted skeletons of craft that once ruled the skies.
----- Bonus to minerals, society and engineering
- Precurosor shipyards: An ancient shipyard rests over this planet, like any honourable empire we called dibs!
---- Bonus to ship build time and construction costs
- Precursor planetary gun: A massive gun, capable of firing into orbit that was built millions of years ago. I feel the need to say someone was compensating for somthing.
---- Bonus to engineering and plantary defense and maybe even a bonus to the planets station damage
- Living planet: the planet itself is seemingly alive, as in its a single giant organism... It says hi
---- Bonus to society and food growth, but massive incerease to building construction and slower growth time, the planet does not want us running away with ourselves
- Universal aphrodisiac: LETS PARTY!
---- Massive bonus to growth time and happiness, big detriment to food intake
- Birds: The birds kill STAY AWAY!
---- Bonus to army skill but increase in building construction and planatary defence
- Gemstones: This plane is littered with exotic gemstones and mineral deposts: not all of them are useful but they catch the eye
---- Small bonus to happiness and minerals
- Ideal for life: Its hard to explain but whatever is on this planet it just seems right for a growing population. People are healthier, more attractive, have greater life expectency and have stronger immune system.
---- Bonus to growth time, happiness migration attraction

Any ones you really like?

I know in your last update you said you were not going to work on any more of these for a while: I just could not help myself :p

-Exotic Coastline: The beaches and coastlines of this world are breathtaking and truely somthing to see. It just rakes in those tourists.
---- +5% to happiness and +20% to migration
-Extensive Mountian range: The planets primary land mass is dominated by an extensive moutian change, where certian peaks creep into the supper atmosphere. It is unkown what could have caused this but it doed make space travel easier.
---- +10% building cost, -10% food, -25% station upgrade and module cost
-Uncomfortable Atmosphere: The atmosphere of this world is unussually uncomfortable, wheather being to hot, cold or even just smelly people find it hard to adapt to the inhospitable conditions.
---- -5% to habability -5% to happiness
-Extensive Ice Caps: The Ice caps of this world extends far further south that it should and cover much of the northern and southern hemispheres, they have a tendency to cool the world more than ususal.
---- Temperete worlds -10% habability, +5% society reserch
---- Hot worlds (Deserts) +5% Habability +5% Society Reserch
-No Ice caps: The planet is unusally hot and as such it has not formed any polar caps. Getting some ice for ypur drink thus costs extra.
---- Temperate Worlds +5% Habability
---- Hot worlds -5% Habability
-Geysers: The planet is littered with gysers that go off periodically, much to onlookers awe.
---- +5% Happiness, -5% food, +10% migration attraction, +5% society research
-Ice geysers: Intense fricition within the planets ice sheets force ice to explode out of the ground and fall as snow on the surounding areas. It is a spectacular display that does have some dangers.
---- +5% Happiness, +15% Migration -5% Habability, +10% society reserch
-Lava geysers: The planet is scattered with miniture volcanos that go off at regular intervals raining ash and moletn rock on the surounding area. While awe inspiring it is extremely dangerous
---- -5% habability, +5% happiness, +5% Minerals
-Acid Rain: Chemicals on the planet form acide rain that scar and tear apart the local infurstructure. However it does wear away the rock revealing mineral deposits. Travel advsory bring a umbrella.
---- -10% habability, -10% building cost, +5% minerals
-Collosal Canyon systems: The planet is covered with extensive canyons worn away by thousands of year of rivers.
---- +5% to happiness, -5% to habability, +5% building construction, +10% engineering
-Sink Holes: A hollow and fragile crust of the planet has lead to the formation of gigantic sink holes that extend fown for miles into the planets crust. Don't look down.
---- +5% buidling construction, increase growth time,, +10% engineering
-Ash Wastes: Volcanic eruptions ave left large swaths of the planet devestated by falling ash and pyroclastic flows, these regions although fertile are near inhospitable for most life.
---- +50% food, -15% habability
-Salt Flats: Formed from dried up oceans and exposed rocks, these salt flast cover vast areas of the planet and are barren wastelands only inhabited by the hardiest of vegitation. However their desolation and composition do hide vast mineral deposists
---- -50% food, -10% habability, +5% minerals
-Cold Core: Millions of years ago the core of this planet cooled and fell into slumber, it is a inert ball of rock with little tectonic activity. It stability grants acess to vast mineral wealth, but at the same time its cold nature makes it slightly hard to live on.
---- -5% to habability, +5% engineering, +15% minerals
-Hot Core: The chaotic and hghly unstable nature of this planets core causes regular erruptions and tectonic shifts, leading to massive changes in its composition.
---- -5% Habability, +10% Physics, +5%Minerals
-Asteroid Strikes: The planet is struck with unusual regularity by asteroids, and is dotted with craters and fresh mineral deposits.
---- +10% minerals, -5% habability, +5% physics
-Super Moon: This planet posses an unussally large moon in comparison to its parent planet, and are close enough to share atmopsheres.
---- +10% Society, engineering and physics research
-Titanic Island creatures: We are living on the back of a giant space turtle.
---- +20% society research, -10% construction
-Mega Continent: The planet is dominated by a single gigantic continent that covers much of the existing landmass.
---- +15% growth time,
-Lost colony: There seems to have once been another colony here within the last few centuries: it has been mysteriously abandoned and left to rot. We can repurpose much of the equipment for our use. Nevermind whatever drove these people off is likely still out there.
--- +10% growth time, +5% millitary damage (maybe a event chain where you are attacked by priates)
- Cosmic flares: The planets weak magnetic feild leaves it vunerable to its suns solar winds: whoes broght idea was to build a colony here!
---- +100% physics reserch, -25% habability, +20% ethic divergence, -20% happiness
- Auroran lights: The planets weak magnetic feild is strong enough to resist most solar winds, but it creates marvolus lights in the night sky. The tourists just love it: nevermind the cancer.
---- -5% habability, +50% physics research, +5% happiness
- Titanic letters: Someone has used millitary grade weapons long ago to carve kilometer long letters into the crust of this planet, they read... oh my
---- +10% sciety reserch
- Junkyard: This planet was centuries a dumping ground for some former empires garbage. To say it smells is an understatment
-5% habability, -15% ethnic divergnce

-Precursor Storehouse: The planet played host to a gigantic storehouse of <inerst precusor race name here> and seems to have been abandoned in the extinction of their race. Remember just don't press the big red button.
---- Gives the planet three large +5 mineral tiles and +20% army bonus due to all the leftover technology
-Precursor Guardians: Snetry robots, automated defense systems and droids belonging to <Inerts precursor race name here> still perform their day to day functions upon this world and do not seem troubled by our prescense.
---- +5% Robot production, +50% planatary defence
-Precursor Travel Network: An ancient travel network covers the planet, making it very easy to get around the world.
+50% growth time, +10% engineering
-Sheild World (May need a better name): The planet is a massive artifical superstructure built by a long dead alien race. Hollow on the interior there is information here that would take centuires to proces and understand. DIBS!
+200% all research, -20% minerals, +50% energy, +50% habability

Cheers :) I implemented most of your previous suggestions already. I have another list of new ones I'm working on right now. I'll go trough your last suggestions after I finish that one :).

Thank you, also thank you for mentioning me on the page ^^

Still are there any bonuses I made that you really like?

Also what bonuses are you working on?

Ice caps is stuff I'm already working on :)
Geysers is a really cool idea!
Hot/cold core is something I could do too
the rest I have already in some form. we'll see ^^

Well, since star modifiers are gonna be a thing...

* Low Metallicity - +25% energy - This star has unusually low concentrations of elements it can't fuse, rendering it more energetic compared to other stars.
* High Metallicity - +25% minerals - This star has unusually high concentrations of elements it can't fuse, leaving it dimmer but ultimately longer-lived.
* Plasmoid Life - +100% society, +10% migration attraction - Somehow, life comprised entirely of plasma has managed to evolve on this star.
* Unusually Dense - +75% engineering, -10% habitability - This star has a high mass for its size, resulting in a higher density and thus a stronger gravitational field.
* Compact Star - +150% engineering, +150% physics, +150% society, -50% habitability, -5% migration attraction - Only and always appears on Neutron stars and Pulsars - The surface of a stellar remnant is perhaps the most extreme environment in the known universe; conquering it would be a monumental undertaking.
* Stellar Spectacle - +10% happiness, -5% ethics divergence - The surface of this star regularly erupts in a vibrant lightshow.
* Flare Star - +100% energy, +100% physics, -10% habitability - Only appears on M and K stars - This star is prone to bursting into especially massive solar flares, releasing disproportionate amounts of heat and radiation.
* Plasma Tornadoes - +50% physics, +50% energy, -5% habitability - The photosphere of this star tends to coalesce into incandescent vortices.
* Unusually Cool - +10% habitability - This star is unusually tame for its star classification.
* Especially Hot - -10% happiness - This star is particularly violent, even for its star classification.
* Recent Supernova - +50% physics, +5% happiness, +5% migration attraction - Only appears on Neutron stars and Pulsars - The progenitor of this star recently exploded; the resulting nebula is still easily visible.

I was also imagining that some sort of extremely expensive gravity negation technology would remove the habitability malus from compact stars.


...Probably thinking way too far ahead in assuming that stars would become colonizable

I don't know if you did already, but Master of Orion 3 had plenty of neat planet modifiers you could take a hint from.

A few odd suggestions that I thought might be cool:
Fortress World: This planet appeers ordinary from orbit, but below the surface are massive and nearly inpenatrable fortresses spanning most of this planet's surface. Although the metals used in the installation are useless to us, there is much to learn from this incredible building.
Minerals -75% Engineering +100% Physics +100%
Maybe for that one (if you can) there could be an event making a building that's a really powerful planetary shield generator.
Artificial Core: This world should have died long ago after the core froze and the magnetic field died, but a massive installation in the planet's core, made by a particularly powerful precursor empire somehow keeps the planet spinning and the magnetic field active.
Physics +50% Society +50% Engineering +50%
Recent Nuclear War: This planet's inhabitants seem to have had a nuclear war as little as 100 years ago, but nanites, built by who could be a fallen empire, in it's glory days in this galaxy keep this world perfect in every way.
Happiness +10% Habitibility +10% Engineering +10%
Cursed world: Although all of our science shows nothing out of the ordinary, everyone who thinks about or is near this world gets the same, unsettling message, over and over. "Something terrible is going to happen here."
Happiness -20%
These should probably be very rare, considering the severity of the modifiers.

Hello I gave it a thought and came up with these modifiers. They might need a balance change but I thought they were not too extreme. I like to make them sound as realistic as possible.

*High concentration potential lifestock: This planet contains a high concentration of potential lifestock animals. If these animels are taimed properly they could be of great value. (+20% food, -10% building cost, +5% habitability)
*High concentration animals: This planet contains an unusual amount of animal species. A paradise for exobiologists. (+15% society research, +10% clear blocker cost, +10% clear blocker time)
*Highly adoptable bioshpere: Life on this planet adopts extremly quickly to environmental changes. (-10% terraformation cost, +20% society research)
*Unknown materials: This planet contains elements uknown to our periodic table. These could be of great value. (+10% engineering research, +10% physics research)
*ammonia based life: Life on this planet is based on the ammonia molecule. This was proved to be theoretically possible but this planet has confirmed the theory. (-10% food, +20% society research, -10% habitability)
*high concentration marine animals: This planet contains an unusual amount of marine animals. They would be a great food source (+15% food, +5% society research)
*high concentration parasites: this planet contains an unusual amount of parasites. Living on this planet is very unpleasent and even dangerous. (-10% happiness, -10% habitability)
*high concentration volcano's: This planet contains an unusual amount of volcano's although they produce a rich soil, they can erupt any time. (+10% food, +10% physics research, -5% habitability)
*High tides: Tides on this planet change rapidly because of other celestial bodies (-5% habitability, +10% physics research)
*Perfect shaped terrain: Terrain on this planet is flat on most places making rapid colonization of this planet possible. (-10% growth time, -10% build cost, -10% build time)
*Rapid spinning planet: This planet spins unusual fast making the day/night-cycle extremly fast. This disturbs the sleep rhythm of most colonists causing them to think differently about certain subjects. (+10% society research, +20% ethics divergence)

These are the onces I have for now. Do whatever you want with them. (English is not my first language)

Hello there! As promised, I have a bunch of modifier suggestions here. Hope some of them will be of use.

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Flavor Modifiers

Haunted*
Whether true or not, superstitious types believe that this planet, once inhabited according to legend, is host to a number of malevolent spirits.

Strange Statue*
A colossal statue, so large it can be seen from space. Who built it, and why, no one knows.

Dark Skies
Even during daylight hours, this planet receives paltry amounts of sunlight.

Eternal Sunshine
Due to it's physics, this planet has significantly more daylight hours on average than night hours.

Melancholy Atmosphere
Though it doesn't necessarily affect anyone or anything on the planet, the scenery and landscape here just feels so sad for some reason.

Mysterious Atmosphere
Something just seems… odd. As if it were quiet. Too quiet. But there's no objective evidence anything is wrong.

Strange Water Color
Due to various chemical processes, this planet's water is of unusual color hues. It does not affect the water's quality but it is a sight to behold.

Famous Grave*
This was where a famous figure in galactic history passed away. They say their spirit still haunts this site.

A Noise*
Most claim that if you stand anywhere on this planet's surface and listen carefully, you'll hear a mysterious, haunting noise. Our scientists have not been able to determine where the noise comes from, and it appears to be harmless, but something just seems off….

Rainbow Skies
For various scientific reasons too complicated to explain here, the skies on this planet are frequently changing colors.

Large Column*
On this planet, a giant column made of an unknown material rises to the skies. We do not know who made it, and it seems indestructible. Mysterious, it looms over and watches all.

Pastoral Meadows [Continental, Alpine, Tundra, Tropical, Savanna worlds only]
The landscape of this planet is littered with peaceful, picturesque meadows filled with beautiful, colorful flora as far as the eye can see.

Mediterranean Landscape [Continental, Ocean, Tropical, Savanna, Arid worlds only]
Large portions of this planet have a so-called Mediterranean climate - a mild, agreeable climate, and one that is full of beautiful coastlines and rolling hills.

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Non-Flavor Modifiers

Musical Creatures +10% society research, +5% migration attraction
The fauna and flora of this planet have evolved to communicate with each other using what we recognize as musical notes. It is not only a boon for researchers, but also lends the world a nice melodic quality to it.

Odd Cloud Shapes +5% physics research
Perhaps due to this planet's atmospheric chemistry, it's clouds often take on unusually vivid, interesting shapes. Some say it's almost as if the clouds are alive.

Giant Blobs
Massive slime molds inhabit this planet, roving the landscape for food. They do appear to have some semblance of sentience.

Archipelago of Oases +5% food, +5% habitability (Desert, Arid, and Savanna planets only)
Despite its hot climate, this planet has a rather high distribution of oases and waterholes scattered across it.

Semi-Intelligent Gas
Various species made of pure gas inhabit this planet. With some work, they might be tamed and have different applications, whether in agriculture, industry, or even the military.
[Four variations: agriculture, industry, military, or tourism - random event will fire once planet is colonized, asking player to determine what the Gas will be used for. If agriculture, +10% food; if industry, +5% minerals and -10% construction time; if military, increase planet health or something; if tourism, +10% migration attraction and alien migration attraction and +5% happiness. These four variations will replace the initial basic modifier that has no bonuses or maluses.]

Polycephalous Animals [Tomb World only] +5% society research
Due to high levels of radiation, many animals on this world have evolved to have multiple heads.

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Tile Blockers

Ghost Town
Perhaps built by precursors or a civilization long lost, the ruins of an old city dot this landscape. It is filled with traps and all sort of dangers.

Precursor Landfill
This area appears to have been used as a landfill for a precursor civilization. It is full of dangerous chemicals and machines.

Dangerous Weather
Because of this planet's climate, this part of the world is prone to unstable dangerous weather. Large-scale atmospheric manipulation and terraforming will be needed if this region is to be settled.

Blob Herds
The giant slimes that inhabit this planet are particularly numerous here and though they are not hostile per se, their large numbers makes it difficult for any permanent settlement to be established. Putting them into large safari reservations will be an important step to controlling them.

Hazardous Air
The air in this part of the planet is ill-suited for life. Work must be done to purify it before it can be settled.

Old Minefield
A precursor civilization placed massive minefields here and forgot about it for some reason, perhaps during a war. Due to their advanced technology, it will take more effort than usual to clear them.

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New Army Types

Giant Blob
Creatures that are made up of masses of slime, now tamed as animals of war. They are trained to kill by turning their slime fluids acidic and decomposing enemies alive, though this means their handlers must keep a safe distance.

Gas Creatures
These semi-intelligent beings of gas have now been tamed by our military. They attack by suffocating and choking enemies.

Oh I forgot to add, but in my suggestions above, the stuff marked with an asterisk could be turned into an anomaly I think. Additionally, on a completely different note, there's a number of spelling and grammar issues in the mod I've noticed that I'd like to help fix.

Cool stuff, thanks! Some great ideas. Won't be for a while for another big update, want to wait a bit now to test and see how people like it before adding in new things. :)

No problem sounds good! I look forward to it.