Pipfall – Cascading Puzzle

Gameplay

Simple rules.
Infinite depth.

Each move can set off a cascade of bursts across the board — understanding when and where they happen is the key to mastery.

🎯

Place a Shape

Drag one of three available shapes onto the board. It must land on cells that already hold sand — every placement matters.

💥

Trigger a Cascade

Any cell that reaches 4 pips instantly fires, pushing one pip to each neighbor. This can spark a chain reaction across the whole board.

⬆️

Score Spills

Pips that fly off the edge of the board score points. The more edge cells you overload, the higher your spill count climbs.

⭐

Earn Stars

Hit the score targets for each level to earn up to three stars. Master every level across all worlds to prove your sandpile mastery.

Features

Everything you need
in a great puzzle.

100+ Handcrafted Levels Over a hundred carefully designed levels across themed worlds, each with a unique board layout and challenge.
Daily Puzzle A new challenge every day with a shared leaderboard. Build your streak and see how you stack up.
3-Star Rating System Breeze through or optimise ruthlessly — each level has three score targets to keep you coming back.
Real Mathematics Built on the Abelian sandpile model — a well-studied mathematical system with provably elegant behaviour.

The Math Behind the Magic

The Abelian Sandpile

Pipfall's cascade system is a direct implementation of the Abelian sandpile model — a mathematical structure studied in physics and combinatorics for its beautiful self-organising behaviour.

When any cell accumulates 4 or more pips, it topples — shedding one pip to each cardinal neighbor simultaneously. The process repeats until the board reaches a stable state. Because each toppling commutes, the final result is independent of the order cells fire. This is the abelian property.

Simple rules.Infinite depth.