The top 100 Pipe Flow players on CPSCount, ranked by highest level reached. Every result on this page was checked by the server before it counted.
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Players are ranked by the highest waterworks level reached. Each cleared level is checked on the server before it counts, a single clear moves you up at most two levels, and replaying old levels never changes your place.
Each run opens a server session when it starts. When it ends, the server checks that the level was really cleared, how long it took and how many turns it needed, so sped-up or invented results never reach the board.
Sign in to your free CPSCount account and play Pipe Flow. Finished runs are submitted automatically and also earn XP and coins. Guests can play every level too; their progress and bests simply stay in the browser.
The waterworks start on a 3×3 grid and get bigger as you climb: 4×4 from level 4, 5×5 from level 9, 6×6 from level 17, 7×7 from level 29, 8×8 from level 45 and 9×9 from level 65. Riveted fittings that cannot be turned appear from level 10, stone service blocks from level 19 and extra joints that form loops from level 25. Every seventh level is a Fill All level: instead of one route from the WATER IN pump to the tank, every pipe must carry water and every joint must be sealed.
Each level shows a target number of turns. Clearing it at or under the target with no leaking joints earns three stars; staying within one and a half times the target plus two turns earns two; any other clear earns one. Stars and your best turn counts are saved in your browser as a personal challenge. The leaderboard ignores them and looks only at the level you have reached.
The Level column shows the furthest level you have reached, so clearing level 1 puts you on the board at level 2. When two players stand on the same level, whoever got there first ranks higher. Every newly reached level also pays 200 XP and 2 coins, within an hourly limit; replaying a level you have already passed pays nothing.
Work outward from the WATER IN socket and settle the pieces with the fewest options first: a fitting on the edge of the grid can never point outside it, except at the pump and the tank. Riveted fittings are already in the right position, so build the joints around them. Undo reverses a single turn, and Restart puts the level back to its scrambled start. Play on the Pipe Flow page, and if water puzzles are your thing, try Water Sort Puzzle and its leaderboard.
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