Re: Can you have two separate games to play different mods?

@MadGamer76131  I'm not sure what you mean by achievements.  But what you could do is create two different Sims 4 user folders, each with a certain group of saves and the mods you want to use with them.  If you move the Sims 4 folder out of Documents\Electronic Arts, or just rename it, the game will create a new folder the next time it loads.  So you could add some saves to that, and the mods you want for those saves, while using different mods in the original folder.

When you want to switch from one folder to the other, just move or rename the folder being currently used and put back the other folder or label it "The Sims 4" again.  The content in one folder won't influence the the saves in the other.