What difficulties does City Builder include?

Choose Very Easy, Easy, Medium, Hard, or Hardest. Each level uses its own clue and difficulty profile.

Do I need an account for City Builder?

No. The game works without an account and saves the current puzzle locally on this device.

Beginner

Skyscraper Sudoku

Place building heights 1–6 without repeats; edge clues show how many towers are visible.

Puzzle setup

Select a difficulty to prepare your City Builder adventure.

How this world works

Read skyline clues and raise a 6×6 city. Place building heights 1–6 without repeats; edge clues show how many towers are visible.

Beginner

Skyscraper Sudoku

Place building heights 1–6 without repeats; edge clues show how many towers are visible.

Puzzle setup

Select a difficulty to prepare your City Builder adventure.

How this world works

Read skyline clues and raise a 6×6 city. Place building heights 1–6 without repeats; edge clues show how many towers are visible.