Game Engine, 3D: Unity + PlayMaker and a few shaders.
Game Engine, 2D: Construct 2 by Scirra.
2D graphics: Photoshop
Compositing for video productions: HitFilm Pro.
Video Editing: Vegas Pro
3d models and animation: Lightwave, or Blender.
...plus my workflow includes about a dozen or so niche utilities and plugins not mentioned.
My itch page with a lot of my self-created asset packs + teaser pages for some upcoming games: https://matthornb.itch.io/