Hello Gito!
Well, I use the Coppercube engine, it's a somewhat limited engine, but if you know how to use it well, you can make good games. Now I'm starting to write scripts before creating the games so I don't have to do anything improvisationally. I make PSX-style games, that is, the models I use and the models I make are Low-poly models, and textures with resolutions between 128x and 256x. To get some ideas, sometimes the idea for a game script comes from my mind, sometimes I get inspired by some horror movie too. When I'm creating a model, I use Blender. For textures, I use Photoshop and Paint.NET. And to create music, I use FL Studio.