• HTML5 / Javascript (Phaser)
• Aseprite
• Pyxel Edit
• Tiled
• Ableton Live (Serum)
• Bfxr.
• Visual Studio Code
• Node.js (Webpack)
• Git

Edit: Oh yeah I also might use some code from this platformer experiment I did (https://github.com/thomasmolby/Phaser-Platformer) just to get started. It's already publicly released, so thats cool right? Anyway It's not like I expect to win, so it ultimately dosen't really matter.