Odd Signal

Every Odd Signal case begins with a choice: how closely do you want to inspect the evidence?

Build a four-sector investigation route, then find the one visual signal that breaks the active rule. Your route changes the board itself—not just its name or color—so the same case can demand a different kind of observation on another run.

CHOOSE HOW TO INVESTIGATE
• WIDE FIELD uses a smaller board and clearer anomaly contrast for 90% scoring.
• TRACE MODE balances board density, contrast, and standard scoring.
• DEEP SIGNAL uses denser evidence and subtler differences for a 35% score bonus.
• Lock one protocol before each six-round sector and preserve all four choices in your final route record.

RESOLVE THE ANOMALY
• COLOR — find the signal with a different hue.
• SHAPE — spot the tile that breaks the pattern.
• DIRECTION — identify the arrow pointing another way.
• COUNT — find the different number of dots.
• There is no countdown: inspect carefully, learn from a miss, and continue the case.

COMPARE THE SAME EVIDENCE
• Start a 2–4 player Signal Battle through Apple Game Center.
• Invite friends or use Apple matchmaking.
• Every participant receives the same fixed 24-round sequence for a fair comparison.
• Live standings compare score, quality, and active time after every solved anomaly.
• Finish on the Battle Board, share the result, or start a rematch.

OPEN THE CASE ARCHIVE
• Today's Case uses date-addressed evidence with your own four-sector route.
• The Case Archive contains 1,000 deterministic investigations and 24,000 anomaly rounds across six levels.
• NEXT CASE moves directly into a fresh investigation without locking the finished board.
• Local crash-safe progress restores the exact round, score, mistakes, and pending route decision.

PLAY WITH PURPOSE
• Practice observation, pattern recognition, and flexible rule switching through the actual mechanic.
• Play one case as a short mental reset, or continue through the archive at your own pace.
• Unwind without forced waiting, artificial urgency, or a countdown.
• Review score, accuracy, time, rule evidence, and the route that produced the result.

PLAY AND PURCHASES
• Solving a board and every Signal Battle stay free of automatic ads.
• In Today's Case and Case Archive, an ad may appear when you choose the next six-task sector or select NEXT CASE, after at least three solved tasks and three minutes of active play. The first task is ad-free, ads are at least ten minutes apart, and at most two appear per app session.
• An unavailable ad never blocks your next board. Tracking permission is optional.
• Settings offers a one-time Remove All Ads purchase and Restore Purchases.

DESIGNED FOR CLEAR PLAY
• Solo play and local progress work offline without an account.
• VoiceOver describes every signal and provides directional access to route choices.
• Dynamic Type, Reduce Motion, light mode, and dark mode are supported.
• How to Play, Privacy & Data, and Help & Support are built into Settings.

Odd Signal is an entertainment puzzle for observation practice. It is not a medical or vision-care service and does not diagnose, treat, restore, or improve eyesight.