Generated levels
Campaign ramps from 3x4 boards to dense 16x16 puzzles. Quick Play creates a fresh board every time.
Rectangle logic, polished for focus
RectaFlow
Draw exact rectangles from numbered clues.
Fresh, solver-checked boards every time.
Generated boards
Solver checked
Respectful ads
Premium puzzle loop
Built for quick sessions and deep boards
Solver validated
A backtracking solver checks each generated puzzle so every board has at least one solution.
Respectful ads
A small banner stays away from the grid. Rewarded ads only appear when players choose more hints.
How to play
The clue can be inside the rectangle
Start from a numbered cell or an empty corner of the intended rectangle. The finished rectangle is valid when it contains exactly one clue and its area matches the number.
- Each rectangle contains exactly one numbered clue.
- The rectangle area must equal the clue number.
- Rectangles cannot overlap and must stay inside the grid.
- Cover every cell to complete the level.
Player-first ads
Small ads, clear puzzle space
Banners stay outside the grid. Rewarded ads appear only when players choose extra hints.
Release ready foundation
Localization, policy pages, and AdMob test setup included
Built for Cloudflare Pages with policy pages, support flow, multilingual copy, and a clean path to connect the final App Store and AdMob production setup.