Dr Evil's Math Challenge
Think Sudoku, but with arithmetic and a whole lot of disco.
Fill every 3x3 house so all nine cells add up to exactly 10. Sounds simple? Try it with 25 houses on the board and column targets breathing down your neck.
Features
Four Difficulty Levels
Easy (4 houses), Medium (9), Hard (16), and Expert (25 houses, 225 cells). Ramp up at your own pace or jump straight into the deep end.
The Gauntlet
Every column has a target sum. Houses must still add to 10, AND columns must match their targets. One correct arrangement. Zero room for error.
Daily Challenges
A new puzzle every day with streak tracking. Go Pro for 90 days of archived puzzles and Expert daily challenges.
Disco Funk Soundtrack
16 original disco funk tracks. Two included free, 14 more with Pro. Dr Evil's lab has never sounded so groovy.
Dr Evil Himself
10 character poses and animations. An interactive tutorial hosted by the mad scientist. Theatrical game show vibes throughout.
Go Pro
Expert mode, Gauntlet on all difficulties, 16 soundtracks, advanced stats, daily challenge archive, and unlimited undo.
Screenshots
Welcome to Dr Evil’s Math Lab
A number puzzle wrapped in a 1970s game show — disco funk soundtrack, theatrical mad-scientist host, and enough groovy style to make your calculator jealous.
Fill every 3x3 house so all nine cells add up to exactly 10. Drag tiles onto the board, swap placed tiles, or tap to place. The interactive tutorial walks you through it in under 90 seconds.
The Gauntlet — Your New Obsession
This is not just another number puzzle. In Gauntlet mode, every column has a target sum. Houses must still add to 10 AND columns must hit their targets. One correct arrangement. Zero room for error. A relaxing puzzle becomes a genuine brain workout.
Go Pro — Unlock Everything
The free game includes Easy, Medium, and Hard difficulties, daily challenges, two soundtrack tracks, and The Gauntlet on Easy. Go Pro to unlock:
- Expert mode: 5x5 grid with 25 houses and 225 cells
- Expert daily challenges
- The Gauntlet on all difficulties
- 14 additional disco funk tracks (16 total)
- Advanced stats: streaks, trends, per-difficulty breakdowns
- Gauntlet-specific performance tracking
- Daily challenge archive: 90 days of past puzzles
- Unlimited undo (standard play includes one per game)
Also Included
- Daily challenges with streak tracking
- Game Center leaderboard
- 10 Dr Evil character poses and animations
- Pinch-to-zoom on larger boards
- Save and resume anytime
- Universal app: iPhone and iPad
Privacy
Dr Evil’s Math Challenge does not collect or share your personal data. Your progress and stats stay on your device. See our Privacy Policy for details.
Ready to try Dr Evil's Math Challenge?
Free with Pro upgrade on the App Store.