I think you're right that it would have been quicker in Flash. The engine I used is mostly a drawing engine, with some basic game stuff included (particles, the beginnings of collision detection). However, this project was all about learning Javascript, and working in a newish field. Plus, a lot of the time I spent was on graphics (I suck at drawing) and iterating and exploring to find the gameplay and style.
Once you learn someone else's framework (not much of an option yet) or build your own (as I and others have) it takes no longer to make games in JS than Flash.
What does Flash provide that makes it easier to develop games like this? If Flash is currently much better than Javascript, don't we just need better high level canvas graphics libraries?
