Hello, I'm planning to use character creator 3 in my video game. Can I use CC3 for a character creator with sliders in my game? Like the one in Skyrim.

Can I use CC3 for a character creator with sliders in my game?

Character Creator is a Tool  to create Characters  to use it in your  Game 

If you want a Tool with slider in your Game then you need programm it self

-------------------------------------------------------------------
liebe Grüße vidi

meet us here

But can I use Character creators mesh, textures and sliders to do that?

a Slider is a Gui element and native program function 






-------------------------------------------------------------------
liebe Grüße vidi

meet us here

Vidi is correct. Sliders are part of the Character Creator program and cannot be exported. Only the character itself. 

---

Is it possible, but it would take some planning. You can make a Base that would be the inital body. Export that to blender/3ds max/maya what ever. Then you make a extended morph on that character, I.E. Heavy to 30%. This will be one morph, export this character. This needs to be added as a blend shape on the main character. From experience avoid morphs that affect body weight as the work needed to make clothing expand correctly is alot of work for all peices of armor. It seems better to go the FF14 route and make standard body masses and allow the morphs to be in the face and chest size only to be able to only have to worry about head gear for the most part. Games like PSO had body sliders but most of the clothing was skin paint and not mesh. 

But there wouldn't be any legal issues? The characters that they players use would of course only be in my game

Yes, as long you use the models as outlined in the Reallusion EULA there is no legal issue, for instance meaning generally to not sell them individually, only distributing them as part of your game.