Siltstamp by nguyenvinh14520222

Siltstamp is a compact postal adventure played entirely in the extension popup. Read a hand-drawn island chart, move across stone shores and temporary sand causeways, and deliver a letter to each of three islanders. Low tide opens the sand for eight turns; high tide closes it for four. If the water catches you on sand, you return to your last stone tile with no lost life or letter. Once all three letters are delivered, return to the western dock to finish the voyage. Use arrow keys or WASD to move, Space to wait, and E to deliver; the same actions have visible popup buttons. The current turn, position, delivered letters, and ending are saved locally so the voyage can be resumed.