Engine: Three.js

Language: Javascript

Platform: WebGL in browser

IDE: Sublime Text 2

Graphics: Tayasui Sketches, possibly Blender

Music: Ableton Live (Intro), maybe Pink Trombone for sound effects and Audacity to edit them

For my base code I just have have a very short snippet that puts some pixels on the screen with Three.js, reads the keyboard and plays some sound.