Numlock: Number Puzzle

Numlock is a fast-paced number puzzle game that will push your mental math to the limit.

HOW TO PLAY
A 4x4 grid of number tiles appears with a target number at the top. Select two tiles and an operation (+, ×, −, ÷) to combine them. The first tile becomes the result; the second disappears. Make any tile equal the target before the timer runs out!

Hit the target to advance to the next round with a harder challenge and a time bonus. The game ends when the clock hits zero. How far can you go?

FEATURES
• Fast, addictive gameplay that takes seconds to learn
• 5 difficulty tiers — from Easy (addition only) to Master (all operations, huge targets)
• Combo system — solve rounds quickly for score multipliers
• Daily Challenge — one puzzle per day, same for all players, share your results
• Game Center leaderboards and 8 achievements
• Beautiful dark-mode design with smooth animations and haptics
• Stats tracking — best score, streaks, combo records, and more
• Widget — see your daily challenge status right from your Home Screen

DIFFICULTY PROGRESSION
• Levels 1-2: Easy — targets 5-18, addition only
• Levels 3-5: Medium — targets 20-45, addition and multiplication
• Levels 6-8: Hard — targets 48-100, add multiplication and subtraction
• Levels 9-12: Expert — targets 100-200, all four operations
• Level 13+: Master — targets 150-500, all operations, minimal time bonus

Every puzzle is verified to be solvable before you play it. No impossible rounds.

DAILY CHALLENGE
A new puzzle every day at midnight. Complete 4 rounds as fast as you can. Share your results with friends in a Wordle-style format. Build your daily streak!

Think you're fast? Prove it.