Triad

About this game

A shape-logic puzzle built from three primitives: a square, a circle and a triangle. Each walks its own way — the square steps one cell orthogonally and is the only one that pushes crates, the circle rolls until something stops it, the triangle moves diagonally and is the only one that can stand inside a pit. You move one shape per turn, so every level is a small argument about order. Twenty-four hand-built levels, all machine-verified solvable, no timers, no fail states, no downloads.

How it plays

• Three primitives, three laws of motion. The square steps orthogonally; the circle rolls until a wall, a crate or another shape stops it; the triangle only moves diagonally.
• One shape per turn. Nothing happens on its own, so a level is never about reflexes — it is about which shape has to move first.
• Pits split the three apart: the square is blocked by one, the circle rolls straight over it, and the triangle can wedge itself inside — which makes it the perfect brake for a rolling circle.
• Crates can be pushed into a pit to fill it into plain floor, and a plate held down by any shape opens every gate on the board — so half the puzzles are about leaving someone behind on purpose.
• Arriving locks a shape onto its goal for good, so parking someone too early can quietly ruin a level — an undo button and a restart are always one tap away.
• Twenty-four levels in four chapters, and a built-in solver: every level is verified to be solvable, the shortest solution is measured, and the hint button simply asks that solver for the next move.

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