High scores, new levels, and full browser version

Here's a new update of this (coop) puzzle platformer!

The first major update is a score system: now you have even more reasons to revisit your favorite levels! Maximize your score, by finishing as fast as possible, with the maximum number of powers in your inventory.

Feedback on the score system is welcome! Should the weights be adjusted? What is your best score?

Secondly, the browser version of the game is now on par with the download version: it can be played with gamepads, and it also features adaptive music. This required creating some new tools, including a javascript dynamic music player based on the WebAudio API. This game only uses half of the possibilities of the music player, so keep an eye out for even more games with dynamic music in the future...

There were also some tiny improvements (sounds, animations, bug fixes). Finally, there are four new levels.

Have fun, leave a comment, and tell your friends about this game! Or even better: have fun together with your friends playing this game. :-)