Beginner walkthrough · Deduction puzzle

Fishing Game: reading the water before you cast

Nobody in the shop believed me that a fishing game could be a logic puzzle, and then they played it. There is no rod to swing and no timing to get right. You have a grid of water, a limited number of sonar pings, and a shoal hidden somewhere in it. Everything you do is deduction.

Walkthrough by Imelda Corrigan · Updated April 2026 · About 6 minutes to read
Type
Grid deduction puzzle, single player
Session
Three to eight minutes per lake
Controls
Tap a square to ping it; tap and hold to place a marker
Learning curve
Rules in one lake, good play over an evening
Played one-handed
Yes

Before you start

The screen is a grid — usually eight by eight — showing a stretch of water from above. Somewhere in it sits a shoal occupying several adjacent squares. You cannot see it. What you have is a small number of sonar pings, shown as a counter in the corner, and that number is the entire difficulty of the game.

A ping does not tell you whether you hit the shoal. It tells you how many squares away the nearest fish is. That distinction is everything, and it is the thing most people take two lakes to absorb.

The first run, beat by beat

Ping a corner first. A corner reading constrains more of the board than a centre reading does, because it can only be measured in one direction. Three corners will usually box the shoal into a quarter of the grid on their own.

Then triangulate. Two readings give you two rings of possible positions; where the rings overlap is where the shoal must be. The game supplies markers precisely so you can hold that reasoning on the board instead of in your head, and ignoring them is the main reason a first lake goes badly.

Only once you have the shoal narrowed to two or three candidate squares should you spend a ping confirming it. Pings spent confirming something you already knew are the only real way to fail a lake.

When you are certain, tap and hold to mark the shoal. Mark every square of it and the lake ends. Mark wrongly and you lose a ping, which is survivable early and fatal late.

What to expect in your first hour

Your first two lakes will run out of pings, and it will feel unfair. It is not — you will have spent four or five pings on squares that could not have told you anything new. The moment that clicks, the game becomes almost too easy for a while, and then the grids get bigger.

Later lakes add a second shoal, which changes the reasoning completely: a reading now tells you the distance to the nearest of two, so a low number is ambiguous in a way it never was before. That is the real game, and it arrives around lake fifteen.

Five habits worth building early

  • Corners before centres. A corner reading rules out more of the board, every time.
  • Use the markers. They exist so the deduction lives on the grid rather than in your memory, and memory is where first attempts fall apart.
  • Never confirm what you already know. A ping that cannot surprise you is a wasted ping.
  • Two readings before any conclusion. One distance gives you a ring, not a position.
  • With two shoals, distrust low numbers. A close reading tells you one shoal is near, not which.

Is it for you?

If you like Minesweeper, Battleship or any pen-and-paper deduction game, this is that with better sound design. It is completely untimed and the board waits indefinitely, so it suits being interrupted.

It will not suit you if you wanted something to do with your hands. There is very little happening on screen and long stretches where you are simply thinking. If that sounds like the wrong kind of quiet, the Chicken Game walkthrough on this site is the opposite end of the range.

About this page. The Game Lantern is an informational site about mobile games. Fishing is described here as free-to-play entertainment: it is played purely for fun, there is no financial element of any kind, nothing of monetary value can be paid in or taken out, and no prizes are involved. Any scores or counters mentioned exist only inside the game. We have no commercial or contractual relationship with any publisher or developer whose game is named on this page.