Very good BD with some original ideas! I like especially the caves Circulation, Intermission Run, Jewel Snapper and Push. :-)

First of all, thanks Arno for the release and the feedback! :)
The cave names and descriptions are once again included in the game itself (just don't switch off the story in the options!), so I'll just give some remarks on some especially hard level 5 caves:
Diamond Road/5: I just found out that this is a bit easier than intended, so I think the level 4 version is harder.
Hurry Potter/5: You need to be very quick here!
Jewel Snapper/5: My personal favourite for the hardest cave in the game - there's no single bonus diamond, so you need to be concentrated and flawless at high speed for over a minute!
New Funnel/5: I needed many tries to figure out a way to leave the funnel without activating the Magic Wall too early!
Push/5: The quickly falling rocks make this one really dangerous (at least for me)!
I wish you a lot of fun with this game! :)