I played the free island twice, once to a win (110 s) and once letting it fail. The look is the best thing here: cream paper, contour lines, hand-inked labels for the hill, the vale and the cove. Hold to scoop and hold to pour is easy to pick up. The hints walk you through sand, then water, then lava at a good pace, and the status line that tells you when a path is blocked by water or lava is genuinely useful.
Things I hit. In the first few seconds an ad panel appeared on the right and the whole island shrank and shifted while I was reaching for the circled sand, so my first press missed. Reserving the ad space from the start would stop that jump.