NN555Survey

Read the field. Make the safe call.

This offline logic game turns every board into a short, focused deduction session. Use numbered clues to work out which covered cells are safe and which contain hazards. The first step is always safe, and boards are designed around signals you can review rather than unavoidable luck.

Choose from three board sizes:

• Beginner: 9 x 9 with 10 hazards
• Intermediate: 12 x 12 with 24 hazards
• Advanced: 16 x 16 with 40 hazards

Reveal cells, mark suspected hazards, and cycle marks into questions when you need to keep an idea in view. Safe zero areas open automatically, while hazards never trigger through an automatic expansion. A visible Reveal or Mark mode helps you stay in control, and clear symbols accompany clue numbers so important information is not carried by color alone.

Work through 60 local levels with consistent layouts, plus a daily field that is generated on your device. Track completed routes, personal best times, and progress through the three difficulty chapters. A guide explains single-cell deduction, remaining-count reasoning, and crossing signals without blocking the start of a game.

When a judgment misses, the field stops safely and highlights the trigger with its neighboring clues for review. When you clear a board, the result shows your time, misplaced marks, and whether the board was completed without guessing.

All progress, preferences, completion history, and best times remain on this device. No account, network connection, advertising, leaderboard, or sensitive permission is required.