To reiterate, we started from this tweet:
We made a sort of endless runner style game where in order to keep going, you have to press DDR buttons to the beat (and sometimes doubletime). At the same time, you must also jump over, slide under and shoot your way through obstacles blocking your path.
You get three mistakes - counted by either colliding with an obstacle or missing the beat.
You can download the game to try here: http://www.whatwouldmolydeux.com/display.php?GameID=158
Music is from http://www.shockwave-sound.com/
Here's a video showing the game in action!:
And here's a video capture of the game itself, to give a better view of what was happening on screen.
Video showing failure:
If we were to work on it some more, I'd like to have segments devoted entirely to dancing - either freestyle (probably just requiring that you're hitting on the beats or quarterbeats), or perhaps a DDR-style 'guided dance section' where you have to complete a sequence. It would also be pretty sweet to have a section where you have to jump up & down to the beat with a crowd of people (would require pressing both foot buttons). Also we originally talked about having aiming to go along with your shooting, but we didn't have time. Note: I recognize that this is technically not an FPS. ;)