Same as always was. I write games using existing middleware, and no direct engine use.
My latest project uses: GLFW, OpenGL, glad, Open Dynamics Engine, Lua (for scripting), FreeType, Vorbis, PortAudio, stb_image, minicoro, komihash, ENet.
What limits my games is not really the programming part; it’s the fact I work alone, am not an artist and have another programming job.
EDIT: Hmm, maybe I can propose adding k4 to that Starlight list