Novel and elegant
Beautifully judged learning curve, with enough simplicity to pick up and play, and enough complexity to keep you playing (and dying) again and again, in a recursive attempt to reach some impossible finale.
Sure, there are many embellishments that could be added, but I'm not sure that they would add enough variety to make the dilution of the purity of gameplay worthwhile.
This is my new go-to game for filling those empty moments on the phone waiting for the hold music to end.