♦︎Dark Injection created by Davo, now developed by rob55rod - This is imo the nr 1 mod to absolutely have for your spore game. It adds tons of content from darkspore such as creature parts and creature armor, edits spores UI to look more like darkspore, gives you tool parts like invisible limbs and individual ability parts, disables the complexity meter and so much more! And it even comes with force save bundled. It has a handy installer too, so you can easily choose what you want to add in your game and what you want to leave out.
♦︎Enchanted color picker by Emd4600 - Another color mod, but this one gives you thousands more colors for your creatures skinpaints then what spore currently has to offer, and gives you more spesific control over what you need.
♦︎B&V Fusion by Mx3brainpower - A mod that adds vehicle parts to the building editor, and visa versa. Not only does it allow you to have complete creative freedom over the building and vehicle editors such as allowing you to place entertainment parts on a factory, but it also adds 144 hidden textures from Spore in all vehicles, buildings and spaceships editors. Extremly good mod for complete creative control with all non-creative editors.
♦︎Spore stacker by Mx3brainpower - Allows MANY creature parts, mainly detail parts, to be stacked. This includes modded parts too. No more fiddling around with limited part placements, now you can finally place those 5 eyes on top of eachother.
♦︎Building rotation mod by DVDmaster - The building rotation mod makes it so you can rotate base and roof parts in building editor, and works very well with B&V fusion.
♦︎Infinite scaling mod by Zarklord - This i think is absolutely essential in complete creative freedom. This mod gives you the ability to enlarge or shrink any part in any editor and allows you to really get into detail without being held back. Note that things that are too big could cause visual glitches.
♠︎Project Bacterioid by IHaveNoIdea. A mod that unlocks the cell editors true potential. Makes the cell editor 3D, adds creatureparts and limbs, adds rotation and morph handles, and more. A good mod for making much more complex cells to have fun with.
♠︎CamBen color pack by CamBen. Adds plenty of parts in different colors and shades to your editor, making you able to have much more control over what colors your creature is. This gives you more creative freedom and makes you able to finally make that big rainbow cat you always wanted to make.
♠︎Adventureprops by CamBen. - One of my favorites, this one adds plenty of props to the adventure editor. You can create so much more stuff with what you get from here, more gates, citywalls, space props, sattelites, more effects and so on. Really recommend this one!
♠︎Himeric Engine by Clicker95 a really cool parts mod that add high quality and realistic alien parts, allowing for some pretty unique creations. The textures are a bit weird but they work just fine. THE LINK IS NOT DEAD!! just scroll further in the thread, a reupload has been posted.
♠︎INTEGRATED INTEGUMENT akaThe Fur Mod by Disgustedorite - This mod was once thought to be impossible...its the FUR MOD!! This handy mod gives you 4 different fur creature parts so you can finally add some real fuzzy charm to your creations. Comes in 4 types of Thickness and different levels of color, so you can really get more creative opportunities.
♠︎Strange and Beautiful by peridot, reuploaded by Darhagonable - A mod that adds tons of high quality parts, with differnt animations such as a tounge sticking out, when a mouth opens, or bunny-like ears that bends along with your creature. Although it suffers from a few visual bugs, i really recommend this one.
♠︎Drone parts by Deoxys_0 - Do you want to make your robot creature even more robotic, but would rather build it with simpler shapes? Or have complete control over building better armor and robots? Then this is the mod for you! it adds plenty of pages full of robotic parts from machine gun nozzles to simple cubes, all in different coat layer coloring. A high quality mod for making high quality robots...or drones!
♣︎Citywalls by Frogottenspore, redone by Darhagonable - A mod that allows you to change the walls to your space and civ cities. I personally love this one because you can use it to get grox walls or a "ruined city" look. Includes 3 custom walls created from scratch that mimics the beta walls from the 2007 beta version of spore.
♣︎InfiniteSOL by ??? - a mod i think its almost neccecary..because once you get the staff of life, you basically get a reward for winning the game....but..you can only use it 42 times, which i think is BULLSHIT! so..yeah, use this if you want your PROPER reward. It removes the limit and makes the staff infinite uses.
♣︎Grox archetype by D3vilSheep - so many has dreamed about playing as the grox, and with this one you KINDA can. It replaces the knight archetype in space stage with a "grox one" aka replaces your aliens voice, background and lighting effect with the grox ones. Mix this with the citywall mod to give yourself the grox citywalls and your almost a complete grox. This works in CIV stage as well.
♣︎Empire voice replacement by Kisutora - Are you tired of hearing your alien 56-mouthed lava sheep empire having the voice of a normal human from the sims? Well no longer shall you suffer, for this mod replaces the voice of your empire with any other archetype voice of your choosing. This DOES include the grox voice as well, but if you want the complete grox package with bg and lighting included, i suggest you take a look at the grox arcetype one above.
♣︎Corporations mod by Logarithm64 - Adds several corporations in space stage. Each corporation has unique and special tools that can be obtained from it. In order to obtain these tools, you have to place structures that belong to these corporations on planets. Doing so will gain the corporation "Fame," which is required to unlock these tools. Once they are unlocked, you can purchase them from the from empires that carry them. Good mod for spicing up space stage a bit.
♣︎New plazas by THEdragon - This mod adds more ground textures, aka plazas to the adventure editor. Gives you more varied plazas and decoration to your adventures, as well as different borderless colony textures, great for making your own custom colony!
♣︎Interstellar industries by Ravnodaus - A nice way to freshen up space stage a bit and add a proper challenge. This mod removes spice and adds 40 different kinds of trade goods to find, from fertilizer to titanium, and much more! Some of them are rare to find, so you will need to dust off those binoculars.
♣︎Change home planet by Emd4600 - A truly remarkable mod that allows you to change your home planet in space stage. Enter to one of your planets and execute the cheat: setHomePlanet The planet will now become your home planet. The planet in the galaxy game selector menu remains the same. Requires ModAPI.
♥︎The 60 fps fix - The 60 patch just removes the 30 fps cap and makes the game play silky smooth. You can add an even higher number if you so desire.
♥︎The Shiny graphix fix. - The shiny fix makes your creatures skinpaints appear in higher resolution, aka makes your metallic or shiny creatures actually shiny or metallic. I wouldn't recommend going above 2048 unless you want tons of crashes.
These are it for now, but i might add more. if you have a must-have mod you feel is needed on this list, or there is something on this list that is wrong, let me know