##########################################################

(adaventure_gnu k => debug k=3[castle], 4(temple), M56789)
==========================================================
	-- jump in {3..9} (debug only):
	-- chapter 1---------------
	-- 3=>castle, 4=>temple, 
	--	5=>maze5, 6=>maze6, 
	-- chapter 2---------------
	-- 7=>maze7, 8=>lab8, 9=maze9
	--	any other number => normal start

==========================================================

todo:

.) further test/adjust slew speed on OSX @ LoDpi & HiDpi
	.) seems perfect on linux!
	.) seems perfect on Windows!
	.) a bit off on NUC
	.) just Ok on older MacBookPro (hidpi)


