I'm looking to make a little game project of mine and could use some advices.

I'll be using C++ and i'm aware of both SFML and SDL. Are there any other good 2D libraries out there for C++ that I should know of? Secondly, I wanna learn more about multithreaded programming so I want to make a game that would force me to use this.

Any advices on a game project  and what 2D library to use would be appreciated. 

I'm looking to make a little game project of mine and could use some advices.

I'll be using C++ and i'm aware of both SFML and SDL. Are there any other good 2D libraries out there for C++ that I should know of? 

Secondly, I wanna learn more about multithreaded programming so I want to make a game that would force me to use this.

Any advices on a game project  and what 2D library to use would be appreciated.