Web Games & Interactive Engines

Nine rows, nine columns, nine boxes. Each gets the digits 1–9 exactly once. The rules take ten seconds to explain. The hard difficulty is a different story.

Eat the dot, grow longer, don't collide with yourself. Simple on paper. At length 40 it starts to feel like production debugging at 2am.

Three rules, zero players, infinite emergent behaviour. John Conway designed it in 1970 and it's been running ever since. Load the Gosper Gun and just watch.

Gabriele Cirulli built this over a weekend in 2014. You slide tiles, merge matching numbers, and try to reach 2048. Most people get there once, then spend weeks trying to beat their high score.

Uncover every safe cell without detonating a mine. The numbers are your only information. Your first click is always safe — from there, it's pattern recognition and luck.

Tetris but hexagonal. Blocks fall inward from six sides, you rotate the hex to match colors. Harder than it looks — the geometry messes with your brain until it doesn't.