Water Flow Game is a browser-based routing puzzle where you open soil cells on a fixed 7 by 7 board to guide a synchronous six-particle stream from a top-row source to a bottom-row container, and capturing every particle on all five levels produces exactly 1,000 points.
The game runs entirely in the browser without downloads, accounts, or network calls, so the only skill being tested is reading the board and choosing up to five soil cells that form a connected channel from source to container. Each level begins with eight visibly diggable cells arranged inside the five middle rows, with the rest of the interior fixed as solid rock, a source on the top edge, and a tank waiting on the bottom edge. You decide which cells to open, then press Release Water and the simulation evaluates the path immediately using a strict priority rule: water always tries straight down first, then down-left, then down-right. There is no animation race, no timer, no random obstacle, and no frame-rate dependence, so the same five-cell layout always produces the same six-particle path, which is what makes the puzzle predictable enough to plan and replayable enough to learn.
What the Water Flow Game Does on a 7 by 7 Board
Every level of the Water Flow Puzzle is a 49-cell board arranged in seven rows and seven columns, with two rows reserved for fixed objects you cannot toggle. The top row holds the source, the bottom row holds the container, and the five rows between them are the only area you can edit. Of those 49 cells, eight are visibly diggable soil that you can toggle between closed earth and open channel; the rest are solid rock that never change.
You have a budget of five opens per level. That budget is the heart of the puzzle. Eight candidates exist, but the right subset of five is hidden from you. It is not stored in the level data, marked in the layout, hinted at by accessibility labels, or previewed before release. The only way to learn whether a layout is correct is to press Release Water and read the result. A successful release draws six particle markers through your open path and reports 6/6 inside the container for 200 points. A failed release either reports a leak at the bottom or a blocked cell, both of which score zero.
Because each level has only eight diggable cells and a strict budget of five opens, the puzzle is small enough to plan visually and tight enough that one wrong cell can decide the level. The game evaluates only the layout you have actually opened, runs the synchronous flow once, and freezes the result so you can inspect it before choosing the next action. There is no streaming animation to wait for and no scoreboard that updates mid-flight; what you see after Release is exactly what the rules computed.
How to Play the Water Flow Game
- Open the Water Flow Puzzle in your browser and read the board: source on the top row, container on the bottom row, eight soil cells highlighted as diggable, and a budget indicator showing five allowed opens.
- Tap or click a soil cell to convert it from closed earth to open channel; tap it again to close it. The source, container, and rock cells are not interactive, and attempting to open a sixth cell is declined without changing the board.
- Sketch a mental path from the source straight down toward the container column. Remember that water only steps down, down-left, or down-right in that strict priority order, so any diagonal-up channel will never be used.
- Open up to five cells that you believe form a complete route. If you can describe a continuous down-first chain from the source to the cell directly above the container, you likely have a valid layout.
- Press Release Water. The flow evaluates synchronously, draws six particles along the resolved path, and either displays 6/6 inside the container for 200 points, a blocked-path message, or a leak message.
- If the layout failed, inspect the reported reason. A blocked message means your path dead-ended before the last row; a leak message means it reached the final row in the wrong column and exited through the bottom.
- Toggle cells to revise the layout. Editing after a failure keeps that failure on record, clears the old path display, and lets you release again. Releasing a second different failed layout deadlocks the run and triggers a Restart prompt.
- On a successful 6/6 capture, the level stays visible with the path, the six particles, and the 200-point award until you choose Next Level. The fifth success records the exact 1,000-point completion on the Finish Game screen.
The full action loop fits inside a single page: open, release, read, revise, repeat. There is nothing to install, no menu to navigate between rounds, and no hidden progression gate other than the five fixed boards.
How the Six-Particle Routing Rule Decides Each Cell
The movement rule is compact, deterministic, and identical for every level. From the current cell, the game looks straight down first. If that cell is an open channel, the water moves there and repeats the check. If down is blocked, the game looks down-left. If down-left is open, water moves there. If both down and down-left are blocked, the game looks down-right. If all three are blocked before the last channel row, the flow stops as a blocked path.
This priority order matters because it makes some layouts feel obvious while others look correct and silently fail. A channel directly below the source is always preferable to a channel placed diagonally. Two channels that look symmetric can resolve differently if one diagonal is open and the other is not, because water commits to the first available candidate in the priority list rather than choosing among equals.
| Priority | Cell examined | Outcome if open | Outcome if blocked |
|---|---|---|---|
| 1 | Directly below current cell | Water moves straight down | Game checks priority 2 |
| 2 | Down-left of current cell | Water moves down-left | Game checks priority 3 |
| 3 | Down-right of current cell | Water moves down-right | Path is reported as blocked |
| 4 (final row only) | Cell directly above the container | Container captures all six particles (6/6, 200 points) | Path is reported as a leak |
The fourth row of the table is special because the final channel row only has one capturing target. If the path reaches the final row in a column other than the one directly above the container, the water exits through the bottom and scores nothing. The container does not scoop water from neighbouring columns; it waits for a true vertical drop into its opening.
Distinguishing a Blocked Path from a Leak
Every failed release belongs to one of two categories, and the game distinguishes them with different messages so you can plan a fix without guessing. A blocked path means the priority chain ended before reaching the final channel row: water sat on a cell and found down, down-left, and down-right all closed at the same time. A leak means the path reached the last channel row but in the wrong column, then fell out through the bottom instead of dropping into the container. Both outcomes capture zero points, but they call for different fixes.
The game also normalizes failure history. Two failed releases of the same five-cell layout count as one recorded failure because the signature only records the sorted set of open indices, not the order you opened them. Releasing the same failed layout twice preserves one failure, but releasing a second different failed layout deadlocks the run and triggers a Restart prompt. A successful 6/6 capture clears the failure history before the next level begins, so the puzzle never punishes you for past attempts once you have solved the current board.
Building Toward the 1,000-Point Run
Scoring is flat and additive: each of the five levels awards 200 points for capturing all six particles, and the fifth success records exactly 1,000 points on the Finish Game screen. There are no partial scores for capturing only some of the six particles, no bonuses for using fewer than five opens, and no penalties for editing the layout before release. The full arithmetic is 200 + 200 + 200 + 200 + 200 = 1,000. Each board's correct five-cell subset is unique within that level, and removing any single cell from it causes the path to either block or leak.
For readers who want a deeper walk-through of how to plan those five layouts without exhausting every subset by hand, the guide Guide the Water Game: Five Boards to a Perfect 1,000 maps each level's geometry in detail. The short version is that each level has exactly one five-cell subset that captures the container, and the rest of the work is reading the board well enough to find it.
Controls, Accessibility, and Determinism
The same five-cell layout always produces the same path, regardless of how you opened the cells, how fast your device is, or whether you released from a phone, tablet, or desktop. The game evaluates the route synchronously when you press Release Water, so you do not need to wait for an animation to finish or estimate where a moving sprite stopped. The path shown is the path the rules actually computed.
Mouse and touch players simply tap soil cells to toggle them and press Release Water to evaluate. Keyboard players Tab through the eight real button cells in order, press Enter or Space to toggle a channel, and Tab forward to the Release control. Each soil button is at least 44 by 44 CSS pixels, and the seven-column board fits inside a 320-pixel-wide container, so the layout remains usable on a 390-pixel mobile viewport. The keyboard relies on native focused buttons rather than a page-wide listener, which means arrow keys and activation shortcuts on other controls keep their standard browser behavior.
Everything runs locally. Channel layouts, flow paths, failures, and scores are not uploaded, and the game needs no account, paid service, network calculation, package dependency, sensor, or file access. The shared game shell may save the best completed score in local browser storage when that storage is available; if storage is blocked, the convenience disappears but the puzzle still plays. Restart recreates the exact initial level-one state, and the double-Escape boss screen hides the board without changing channels, failures, flow, level, or score.
What This Water Flow Game Is Not
The water in this game is a visual theme for a cellular routing puzzle, not a calibrated fluid simulation. The 7 by 7 geometry, the priority order, the six-particle count, the container opening, and every score are product-authored grid rules, not physics. The board does not model real liquid volume, pressure, viscosity, surface tension, pipe diameter, terrain permeability, gravity, drainage, flood behavior, plumbing capacity, or elapsed time. Nothing on the board should be used to predict, design, or assess any real hydraulic system.
This distinction also explains why the same five-cell layout always produces the same path. There is no random source, hidden timer, animation race, changing obstacle, or frame-rate-dependent result in the rules, which means the only thing you are practising when you replay a level is reading the priority chain and choosing a tighter subset of opens. That is the entire skill surface: pick the right five, route once, and capture the container.
For a deeper look, see Is the 1,000-Point Water Sort Score an Intelligence Test?.