[sporkologist]

Is the thunder being generated? That's the most interesting part IMHO.

[anonytrary]

Are all of the sounds being generated? They sound like recordings, but I didn't wait long enough to check for a loop.

[garblegarble]

Looks like it's a few MP3s being mixed together, each quite long. e.g. splashing-rainfall160.mp3

[anonytrary]

Ah, yeah it sounds like that, thanks for checking. I suspected they were recordings because adding the window effects also adds unwanted non-window background effects. I'd have guessed a generator would keep each effect as distinct as possible from the others.