9×9 Medium B (23 nodes, 27 bridges). BFS from the highest-value island (2,3) v=7, near the top-left cluster. Bridges draw on and nodes pop green as the wave fans right and downward through the dense upper band.
9×9 Medium C (23 nodes, 23 bridges). BFS from top-left corner (1,0). 14 hops to the far end — the longest diagonal sweep in the set.
10×10 Medium B (23 nodes, 26 bridges). BFS from (6,2) v=6. Wave races along the dense middle band, reaches the isolated bottom cluster last.
10×10 Medium C (21 nodes, 26 bridges). BFS from top-left (1,0). Two strong vertical columns cascade down both sides of the board simultaneously.
11×11 Medium (23 nodes, 22 bridges). BFS from central node (5,4) v=5. Wave expands in all four directions through the open grid, corner nodes light last.
9×9 Medium A (18 nodes, 21 bridges). Same BFS structure but hop step cut to 80 ms and bridges appear by opacity fade rather than draw-on. Nodes at the same ring bloom together in a smooth continuous wash.
8×8 Medium A (18 nodes, 19 bridges). BFS from (3,2) v=5. Larger nodes at S=56 make the green bloom easier to read. Ease-out timing gives each island a slight "settle" feeling.
10×10 Medium A (19 nodes, 19 bridges). BFS from (5,6) v=5, 7 hops. The 560 ms active front (7 × 80 ms) is wide enough that multiple rings are fading in at once — the closest this set gets to a single continuous animation.
Designed for the exact moment the last bridge is placed. The solved puzzle is always green; two concentric rings erupt simultaneously from every island, expand, and fade in under a second. The board is readable the whole time and the effect is gone before the player reaches for the next button.
Six sparkle particles burst from every node in a hexagonal pattern and fly outward while fading. The tiny 8 ms per-node stagger keeps it reading as a single simultaneous eruption. The solved puzzle stays fully legible beneath the particles.
The gleam sweep, but BFS-propagated from the last placed bridge. The solved puzzle is always green. The moment the trigger bridge (bottom-left) snaps in, a near-white flash erupts from it and travels outward through the bridge graph — each bridge brightens and settles in BFS order. 9 hops reach the farthest node in ~720 ms; the whole board has settled by ~2 s.
A diagonal white light sweeps left-to-right across the solved board in ~700 ms — like sunlight catching glass. Per-node brightness pulses are timed to the gleam's x-position so each island flashes as the light crosses it. The most subtle of the three overlays; ideal as an always-on completion flourish.