Lumen Nodes vs Eikonal

LUMEN NODES — Route the light. A calm light-routing puzzle for iPhone and iPad. Place lumens, aim their beams, and route light across the board until every extractor hums at its exact target. The first few levels gently show you the ropes — then it's just you and the board. No timers, no pressure. Only the quiet click of a circuit falling into place. — THREE WAYS TO PLAY — CAMPAIGN. One hundred levels across four chapters. Complexity grows from the first quiet square to the legendary 16×16 capstone — every shape unique, every solution discoverable. DAILY. The same puzzle for everyone, every day. Streaks count. Skip a day and start over. A small ritual at local midnight. INFINITE. Endless rounds, one after another. Game Center leaderboards: all-time, weekly, daily. How far can you push? — DESIGNED FOR CALM — • Plays on iPhone and iPad, with iCloud sync — start a board on one device and pick it up on another. • Dozens of visual themes. Cardstock pastels, deep cosmic, animated sakura petals, drifting dust motes, sonar rings over a quiet sea — pick the one that feels like today. • 17 achievements. Hidden trophies for the curious. One legendary unlock that nobody talks about. • Ten languages. English, German, French, Spanish, Turkish, Russian, Ukrainian, Bosnian, Croatian, Slovenian. • Plays offline. No account, no login. • Game Center for achievements and leaderboards. — FAIR MONETISATION — Free download. All 100 campaign levels, the daily challenge, and infinite mode are fully playable without paying anything. Light points are earned through play — every star rating, every daily completion, every infinite round contributes, so you can unlock extras without spending. Optional purchases: • Ad-Free Bundle — $2.99, one-time. Removes ads, unlocks all 15 premium themes, and adds one extra life on every level. • Light Point packs — optional top-ups if you'd like to unlock themes, cosmetics or undos faster. — BUILT BY ONE PERSON — Lumen Nodes is made by an independent developer in Austria. Found a bug? Have an idea? Write directly: support@lumen-nodes.com Privacy Policy: https://lumen-nodes.com/privacy Terms of Use: Apple Standard EULA applies (https://www.apple.com/legal/internet-services/itunes/dev/stdeula/) Support: https://lumen-nodes.com/support

Eikonal is a physics-accurate optical puzzle game. Place and rotate mirrors, prisms, and lenses on a dark canvas, and watch real light rays bend, reflect, and split in real time. There is no submit button — the puzzle recognizes itself as solved the moment your ray field reaches every target. Named after the eikonal equation, the mathematical foundation of geometric optics, the game simulates light the way it actually behaves: angle of incidence equals angle of reflection, white light disperses into red, green, and blue through a prism, and lenses converge and diverge beams along their true paths. 100 PUZZLES ACROSS 5 CHAPTERS • Reflections — Mirrors. Bounce light to the target. • Refraction — Prisms. Split white light into its spectrum. • Convergence — Lenses. Focus and diverge beams. • Channels — Beam splitters and fiber. Guide multiple paths at once. • Caustics — Diffraction and curves. The master class. LIGHT THAT FEELS ALIVE Every move updates the entire ray field instantly. Nudge a mirror a degree and the whole scene of light shifts with it. The simulation runs continuously, so solving is a tactile, exploratory act — not a guess-and-check. DESIGNED FOR iPHONE AND iPAD Smooth, responsive ray tracing. Glowing beams against a near-black field. Built for iOS 17 and later, with full iPad support in every orientation. NO NOISE No ads. No in-app purchases. No accounts. No internet required. Just you, the light, and the puzzle. Solve with light.