Stupendous!
While I prefer the first three Happy Land series, this is is definitely an improvement over Happy Land IV. Your abstract art and strange plots (yes, there are very minor stories going on in these animations) make my day.
It does vary from the original everybody is happy and dancy Happy Land shows quite a bit. No longer are people senselessly bouncing around. Now they are stomping and blowing things up.
I can't wait for Happy Land X or XX or even M!