Colorful World

One line per colour.
Every square filled.

A path puzzle with a world to travel — from the Pyramids of Giza to Patagonia, two hundred boards that each have exactly one answer.

200levels, eight difficulty tiers
19countries, each with its own music
1solution per board — proved, not assumed
0ads and in-app purchases

The rules fit in a sentence

Every colour has one starting dot. Drag a line out of it. Cover every square, never cross another colour. That is the whole game — and it stays interesting for two hundred levels because the boards get harder, not bigger.

Every level has exactly one answer

Boards are generated and then proved: a solver rejects any board with a second solution, and any board a cheap strategy can clear. So a level is never unfair, and being stuck always means there is something to see.

It plays anywhere

All 200 levels work with no connection. The leaderboard is the only part that needs the network, and when it cannot reach it the game says so instead of inventing players.