Should the first tide change move the water or close the path?
Choosing a readable consequence before animating a whole sea.
For a future prototype, the tide could cover one step of the boardwalk. That would give the player a clear consequence without rebuilding the entire coastline.
Another option is to move only a visible water line and keep the route open. It is simpler visually, but might not change any decision.
Which would you test first in a small game about an evening inspection? The current public artwork has no moving water; I want to choose the interaction before making frames.