Upgrade system

Hello,
I want to make a game where you could upgrade 9 things (8 unit + total profit, like in adcap) but i dont know where to start as i can have base game upgrades (low level) and the end game ones, i can have a hundred of upgrades for each unit !

The difficult part is that a need to be able to store this data in the game save class

 

Hello,i'm on the computer so i can post something more detailed, i'm looking for a system that would support
-> Many upgrades categories with different values
-> Being saved to the disk and work after i add some more upgrade when a new update is released
-> That would display the 5 cheapest upgrades amongst all types when my user clicks on a button

 

Look into AssetBundles and PlayerPrefs in the unity manual/api reference

 

Can you explain a bit more..?

 

Playerprefs: http://docs.unity3d.com/ScriptReference/PlayerPrefs.html

Or search asset store as mentioned above:
https://www.assetstore.unity3d.com/en/

 

It's not what i'm looking for...

But I had an idea
I can put every upgrade in various xml files, create a object or struct who would hold every attributes, then put that in a giant array, but how do i sort that array ? Plus, every upgrade will need an id to save then, how to save every id (save an array) ?

But i seems a little complicated for what i'm looking, just a basic upgrade system to add multiplier to some properties of my class...anyone that has made a similar system can help me?
The game's target is WebGL

 

bump

 

You need to break this down a little. Currently you are asking for a fairly amorphous blob that kind of does everything and nothing. Build some specifications in plain English. The code will flow naturally out of that.