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, then drag to any cell that belongs to that rectangle. The number is the area, and it does not need to be a corner.
- 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.
Keep it free
A one dollar tip keeps the puzzle flow moving
RectaFlow is designed as a free puzzle game with small ads and optional rewarded hints. Tips are voluntary and never gate gameplay.
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.