Pebblefen

Pebblefen is a puzzle on a nine by nine fen at dusk. Flick a river pebble up, down, left or right and it skims straight on until it strikes another pebble, a standing stone, a reed bed or the bank; mud holds whatever lands on it. Four or more of one colour in a row, column or diagonal clear. Every flick that clears nothing lets the tide in, and its pebbles skim in the same way from numbered inlets on the bank, shown in advance, so you set stoppers first and catch what the water brings: a pebble from the tide that completes a line scores half again. Play fifteen stages across three marshes with reeds, mud, standing stones and great stones, an endless open fen that grows harder as you score, or a daily fen that is the same for everyone. Still water takes back a flick, the heron's eye shows a good one. It plays in the browser with a mouse, touch, keyboard or gamepad, in English or Bulgarian.