Sundown vs Induction

Sundown is a clean, challenging logic puzzle game about filling a grid with suns and moons. Every puzzle has one solution and can be solved by pure deduction. No guessing, no trial and error. Fill each 6x6, 8x8, 10x10, or 12x12 grid by following simple logic rules: each row and column needs an equal number of suns and moons, no three matching symbols can appear in a row, and edge clues show when neighboring cells must match or differ. Play a fresh Daily Challenge every day, choose new puzzles by size and difficulty, or share a puzzle code so friends can solve the same board. Sundown is great for fans of logic games, number puzzles, grid puzzles, brain training, Sudoku, Tango, binary puzzles, and deduction games. Stuck? Step-by-step hints teach the next deduction without immediately spoiling the answer. Track your stats, solve streak, best times, and achievements as you improve. Sundown is free to play with optional rewarded ads. Premium is a one-time purchase that unlocks unlimited play, Expert puzzles, premium themes, custom sun and moon symbols, and removes ads. No subscription. Features: • Pure logic puzzles with one solution • Daily Challenge puzzle • 6x6, 8x8, 10x10, and 12x12 grids • Easy, Medium, Hard, and Expert difficulty • Step-by-step hints that teach deduction • Puzzle codes for sharing boards • Stats, streaks, best times, and achievements • Streak reminders and freeze safeguards • Premium themes and custom symbols • No account required

Somewhere inside the box, lodestones are hiding. You can't see them. You can only fire probes into the machine and watch what comes out. A beam that flies straight through? Nothing in its path. A beam that never comes out? A direct hit. A beam that exits somewhere unexpected? Now you're getting somewhere. Every deflection is a clue! Induction is a pure logic deduction game in the tradition of the classic Black Box puzzle: a hidden grid, a limited set of probes, and everything solvable by reasoning alone. No luck, no timers, no move-matching. If you love Minesweeper, nonograms, or picross-style deduction, this is that same "aha!" — with beams. HOW IT PLAYS • Fire probes into the edges of a hidden grid • Read the results: hits, deflections, reflections, pass-throughs • Mark your deductions in the grid until you're certain • Seal your answer. Clean solves and streaks are tracked. WHAT'S INSIDE • Over 1,000 hand-tuned puzzles across notebook collections, from gentle on-ramp to expert codex • A new Daily Challenge every day. The same puzzle for everyone, and streaks to keep • A tutorial that teaches by demonstration, not walls of text • Beautiful vintage-laboratory notebook style PLAYS ANYWHERE • Fully playable offline (commutes, flights, dead zones) • No account required. Sign in with Google or Apple only if you want your progress backed up or synced across devices • Progress backup and cloud sync when signed in FAIR & FOCUSED • Free, supported by ads; rewarded ads are always your choice • No pay-to-win, no energy systems, no consumable nonsense • Your brain is the only power-up From Connexus Digital, the makers of Connexus Puzzles. Charge the coils. Fire the probe. Find what's hiding.