Achievements
Badges that make streaks visible
Designed to feel celebratory, friendly and worth sharing without turning the product into noise.
First Puzzle
Solve your first Sudoku at Rätselinos.
7 Day Streak
Return every day for one week.
No Mistakes
Finish a Sudoku with zero mistakes.
Speed Demon
Solve a Sudoku in under three minutes.
Sudoku Master
Solve 100 Sudoku puzzles.
Inhuman Solver
Beat the inhuman difficulty.