Sector 1
North Cistern
Open
A single civic feed. Rotate elbows until the cistern reaches the north tower. No gates, no second fluid.
Sector 1
North Cistern
Moves0
FeedDry
NeedCivic
Best—
- Civic feed
- Mineral riser
- Fused line
- Gate
- Civic tower
- Forge
How the lattice turns
- Tap a free tile to rotate it a quarter turn. Locked tanks and towers stay fixed.
- Cyan cisterns feed civic towers. Violet risers feed forges. A fused line is both at once.
- A civic tower fails if mineral fluid reaches it. A forge fails if civic water reaches it. A fusion hub needs both.
- A gate looks like a wheel. Tap it to open or close. It does not rotate.
- On pressure sectors the surge weakens by one step on every tile. Distant towers go dark if the path is too long, or if a split spends the head.
Sector restored
North Cistern live
First pulse
Restore the grid
Orrelane’s canals are dry. Turn the glass until cyan water reaches the civic tower. Later sectors add a violet riser, gates, and pressure limits.
Twelve sectors
Districts wait on the grid
Each sector opens after the one before it runs live. Hidden perfect routes are not required. The next cistern stays sealed until the current towers drink.
Sector 2
Ribbon Street
Sealed
The line drops a level, then folds west along the ribbon. Keep the glass continuous. Empty tiles are not walls; they simply carry nothing.
Sector 3
Twin Yards
Sealed
One cistern, two towers. A tee must split the civic feed so both yards drink at once.
Sector 4
Gate Walk
Sealed
A wheel sits on the only live path. Tap the wheel to open it. Turning nearby elbows is not enough while the gate stays shut.
Sector 5
Volt Annex
Sealed
The mineral riser is violet. It must reach a forge, not a civic tower. Treat it as a second species of water.
Sector 6
Parallel Feeds
Sealed
Cyan on the upper ribbon, violet on the lower. Keep them apart. A shared tile becomes fused and spoils both destinations.
Sector 7
Clean Channels
Sealed
Middle elbows tempt a cross-link. Disconnect the bridge. Two pure rows is the restoration; one mixed spine is a fault.
Sector 8
Fusion Bay
Sealed
A fusion hub will not light on a single fluid. Join civic and mineral in one tee, then drop the mix into the hub.
Sector 9
Pressure Spine
Sealed
Head drops one step per tile. The short ribbon keeps the tower live. The long gallery drinks the surge dry before arrival.
Sector 10
Twin Cisterns
Sealed
Two civic tanks, two towers. Each tank owns one ribbon. Do not steal glass from the other run.
Sector 11
Split Yard
Sealed
A tee divides remaining head between its live outlets. Both yards need enough pressure. An extra open branch spends the surge.
Sector 12
City Heart
Sealed
Civic tower, forge, and fusion hub in one chamber. Open the gate on the mix drop. Keep the pure branches unmixed.
Two feeds, one lattice
How the fluids behave
Hydrilo is not a single-color pipe walk. Civic water and mineral riser share glass, and the lattice remembers both.
-
01
Civic feed
Cyan cisterns face one direction. Water leaves through that mouth only. Civic towers accept cyan and reject violet. If both arrive, the tower reads as contaminated and stays dark.
-
02
Mineral riser
Violet fluid is drawn from geothermal columns for the forges. A forge goes live only on a pure riser. Civic water in the same glass spoils the melt line.
-
03
Fusion
Where the two feeds share a tile, the line becomes fused. Fusion hubs require that mix. Ordinary towers treat fusion as a fault.
-
04
Gates and head
A closed gate has no ports. Open it with a tap. On pressure sectors each tile spends one step of head. On split sectors a tee divides what remains across every live outlet.
Reading the board
Glow is the map
Filled glass shows the live fluid. Gold rims mark locked tanks and towers. A dim wheel is a shut gate. Tap empty of a lock and the fitting turns.
Civic works
A city rebuilt around water
Orrelane raised its canals after the old river was sealed under the lower decks. Glass lines now run beside the streets so crews can see the surge. Hydrilo is the logic used to bring those lines back after a dry season.
Why two fluids
Drinking water cannot share a long run with the mineral riser that cools the forges. Short fused spans are allowed only at fusion hubs, where the mix drives heat exchangers.
Why the fittings turn
Each tile is a service joint. After a shutdown the joints are left in a safe scramble so a dry grid cannot dump into occupied halls. Restoration is a sequence of quarter turns, not new pipe.
Why pressure is counted
The cisterns sit only a few decks above the yards. A path that wanders spends the head. Towers go dark even when the glass is connected, if the surge arrives empty.
North yards
Towers drink from the facade
Civic stacks take water at a single mouth. That is why a tower on the board has one port. Miss the facing and the stack stays dry even if a glowing line sits beside it.
Before you turn
Begin at the north cistern
Sector one teaches elbows and a single tower. Ribbon Street adds a drop. Twin Yards teaches the tee. The rest of the city waits on those three habits.
Pumping ring
Stations that hold the surge
Three houses sit on the civic ring. They are not levels. They are the rooms that keep Orrelane’s restored grid from collapsing after a sector goes live.
House of lift
High Outlet
The outer station throws water from roof mouths into the raised canals. Gold trim on the ribs is not decoration; it marks the pressure jacket.
House of sight
Chart Table
Dispatchers read the city as a glowing model. Cyan is civic, violet is mineral. A fused span shows both. The table is how a dry sector is chosen for Hydrilo.
House of heat
Mineral Forge
The annex takes only the violet riser. Mixed glass here cracks the heat exchangers. That is why the lattice treats contamination as a failed sector, not a partial win.
Service joints
Wheels on the walk
Gates are left closed after a shutdown. A crew that only rotates elbows will stand in a live-looking street that still carries nothing. Tap the wheel. That is the fourth habit.
On this device
Restoration log
Cleared sectors, best move counts, and recent restorations stay on this handset. There is no account. Clearing app data erases the log.
Live0/12
Moves spent0
Best total—
Sectors
Recent restorations
No restorations yet. Bring one sector live.