Comparison

Sliding Puzzle vs HydroValve

Price, ratings, monetisation and update history for both games, side by side โ€” with what reviewers say about each.

Head to head
About

Sliding Puzzle

Features
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Slide the tiles to connect one unbroken path from start to goal. This is not the usual sliding puzzle where you sort numbers into order. Every tile carries a fragment of a line. Push them into the empty square, rebuild the route in your head, and the whole path lights up the moment it connects. 50 levels, 3x3 to 6x6. Features - Clean, paper-like board with smooth sliding animation - 50 levels across 4 chapters (3x3 / 4x4 / 5x5) - Free play in any board size, 3x3 to 6x6 - Three-star rating based on your move count - Move counter, three-star target, and a best record for every level - Undo one move, or restart the level anytime - Haptic feedback on every tile - Particle celebration when a level is cleared - Plays fully offline How to play 1. Drag a tile that sits next to the empty square into that square 2. Connect the line from the bolt (start) to the checkered flag (goal) 3. Connected tiles glow, so you always see how far the path reaches 4. Fewer moves means more stars A quiet way to focus, or a short break between things. Slide the tiles and connect the path.

About

HydroValve

Features
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Route water from SUPPLY to every DRAIN โ€” through pipes that stay EMPTY while you build. There's no preview and no undo once the valve opens: trace the flow in your head, commit, and watch your route holdโ€ฆ or leak. Every leak drains the same shared tank. At 0%, the run is over. SURVIVAL โ€” Permadeath against a build clock. At zero, the valve opens itself. Learnable, fixed levels: every scene is the same every run โ€” master them. CHALLENGE โ€” The plumbing is already installedโ€ฆ and sabotaged. Find and fix every fault before you commit. CAMPAIGN โ€” Descend through six facilities. Saves after every level, but once open, the valve NEVER shuts. LIVING MACHINERY โ€” Treatment units scrub fouled water. Gate valves ship shut. Welded faults resist repair. Cracked floors bleed your reserve. Deep levels stack everything at once. KEEP IT PURE โ€” Water fouls as it travels. Run it too far unwashed and it clogs โ€” then bursts. Route through purifiers, or drop portable filters where you need them. WORLD RECORDS โ€” Post your best runs to a live worldwide leaderboard. Three letters, your level, your time. No account, no sign-up. PERFECT ROUTING โ€” Every clear is graded against par. Zero waste earns three stars. Six facilities. Twenty achievements. One shared tank. Hold the pressure.

Screenshots

Sliding Puzzle3 screens
HydroValve4 screens

Verdict

The call

The clearest difference is in-app purchases: Sliding Puzzle at none against HydroValve's 1. HydroValve's advantage is update cadence (daily vs monthly) and iOS requirement (15.0 vs 26.1). On price, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. HydroValve sells 1 one-off in-app purchase. Sliding Puzzle asks for nothing beyond the download.

UpkeepUpdate frequency

Sliding Puzzle ships an update monthly, HydroValve daily. The most recent releases landed on October 25, 2026 and October 9, 2026 respectively.

Scorecard3 real differences ยท 3 level
Sliding Puzzle versus HydroValve: the parameters behind the verdict, then further details
ParameterSliding PuzzleHydroValve
PriceFreeFree
Update frequencyMonthlyDaily โ€” better
AdsYesYes
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS26.115.0 โ€” better
Further details โ€” not scored
Size5 MB63 MB
Age rating4+4+
DeveloperMIZOU, CO., LTD.AbsoluteNoobStudio

In-app purchases

None

Sliding Puzzle

No in-app purchases

1 purchases

HydroValve

One-time1
  • Remove Ads$1.99

Questions

Is Sliding Puzzle free?
Sliding Puzzle is free to download, with no in-app purchases.
Is HydroValve free?
HydroValve is free to download, with in-app purchases available.
Do Sliding Puzzle or HydroValve have ads?
Both Sliding Puzzle and HydroValve show ads.
Which is updated more often, Sliding Puzzle or HydroValve?
Sliding Puzzle ships an update monthly, and HydroValve daily. Most recently, Sliding Puzzle was updated on October 25, 2026 and HydroValve on October 9, 2026.

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