NN555Safe

NN555Safe is a local logic puzzle game built around careful deduction and short play sessions.

Read the clues around each revealed cell, mark the hidden hazards, and clear the board without guesswork where possible. The game offers three main difficulty tiers with 60 progressive levels, plus a daily board for quick repeat play.

Features:
- Beginner, intermediate, and advanced boards with increasing grid sizes and mine counts
- A daily board with local completion history
- A built-in loading screen and a tutorial run for the first board
- Auto-expanding empty areas, flagging, question marks, and undo for the latest flag action
- Pause and resume support, loss review, and clear win summary feedback
- Local statistics, best times, and saved progress on the device
- Settings for mark mode, sound, motion, theme, and helper markers
- Guide and privacy pages that stay fully local

The app is designed for offline use and keeps progress on the device only. It focuses on clear clues, safe interaction, and compact boards that fit short sessions.