Components
Open Sudoku is a simple open source sudoku game. It's designed to be controlled both by finger and keyboard.
Proposal
My suggest is added the feature high level on opensudoku.
Mockups / Examples
Before add feature.
After added maybe look like this.
Benefits
With the addition of this highest level will make players play more excited in the play.
Posted on Utopian.io - Rewarding Open Source Contributors