One of the things that took me a lot of time during LD23 was level design. This is partly because I didn’t have a tile map editor that I was familiar with and it seemed like working with the CSV data was good enough.
Please, give it a try and let me know what you think in the comments below. I’m currently hosting it via Dropbox, but I may provide a more permanent home if needed. Also, if there is interest, I’d be glad to put up a bitbucket repo with complete source.
It has been tested thoroughly in Chrome, and minimally in Firefox and IE9. I recommend using Chrome for now.
Here’s a simple screenshot to give you a feel for it: