I’m a little confused what everyone means by the new version. If you’re referring to the Game Maker version, yes there are a lot of differences, but it’s not exactly newer. (And you wouldn’t be able to upload it as it’s not a flash game.)

I can’t make an update though since I lost the source code. I’d have to start over, and I have a lot of other things taking up my time.

Man, as I said, if you gave me the source code, I’d be more than happy to update the game, and make it maybe even better than the GameMaker version. You could possibly retrieve the source code from the uploaded version to Kongregate?

No. In general, you can’t recover source code from a compiled file. It’s possible to decompile it, but what you get is rarely usable.

Besides. If you want to make a version yourself, I doubt my source code would really speed things up that much. The gameplay and physics are both fairly simple.