Sudoku Play

Sudoku Play for Opera gives you a fast popup Sudoku experience right from the browser toolbar.

Open the popup and choose what you want to play:

Play 10 mini popup levels
Open the full 9x9 board
Open Daily Sudoku on the website
Open Kids Sudoku on the website
Open the Guide
The extension is designed as a lightweight companion to https://sudoku-play.org/ so you can solve a quick puzzle in the popup, then move to the larger board or the website for more modes.