I use a number of different applications :)
1. Koikatsu (with mods) for the 3D modelling and scenes
2. Ren'py for the code and game creation
3. Visual Code Studio for the coding
4. Affinity Photo for editing 2D renders
5. Da Vinci Resolve for editing animations
6. Audacity for creating and editing sound effects and music
7. Nebo for note-taking and brainstorming
Hope that helps!