Before you start
Most popular
Illusion Lab Predict what a classic illusion is really doing — Müller-Lyer, Ponzo, café wall — then reveal the measurement. 
Trick Science Drill See a magic trick and pick the principle that makes it work — misdirection, persistence of vision, and more. 
Lens Lab Predict the image a converging lens forms — real or virtual, upright or upside-down — then reveal the rays. 
IllusionForge Journey A path through every kit — clear each stop of real practice, then move on. All activities
Experiment with perception
Illusion Lab Müller-Lyer, Ponzo, Ebbinghaus, café wall, Hermann grid, Kanizsa, Penrose — predict, then reveal why your brain is fooled. Trick Science Drill Pick the scientific principle behind a magic trick or real-world illusion. Refraction Bench Predict how a ray bends from air into water or glass — Snell’s law, and where total internal reflection traps light. Lens Lab Cross the focal length and predict the image — see why a camera, projector, and magnifying glass differ. Teach the Cast Teach a perception idea to a cast member still learning it — teaching makes it stick.
Practice & play
Mixed Practice A short round across the kits you have played — brought back to make it stick. IllusionForge Sprint Race your OWN best on what you already know. Timer optional, no penalty for a miss. Trick Questions Brain-teasers with a twist — spot why the obvious answer is a trap. IllusionForge Duel 2–4 players take turns on one device — same questions, highest first-try score wins. Or open an online room. Progress Your levels, streak, and how each skill area is coming along — saved on this device. Progress report For grown-ups — a private on-device snapshot mapped to the skill areas. Export a CSV or print.
Concept Kits — 16 kits from light & illusions to cognitive psychology
Kit 1: Light, Refraction, and Optics The Physics of Tricks · grades 4-5 · 25 questions Kit 2: Persistence of Vision and Motion Illusions Optical & Sensory Illusions · grades 4-5 · 25 questions Kit 3: Force Vectors and Center of Gravity The Physics of Tricks · grades 5-6 · 25 questions Kit 4: Classic Optical Illusions Optical & Sensory Illusions · grades 5-6 · 25 questions Kit 5: Change Blindness and Inattentional Blindness Mind, Attention & Magic · grades 6-7 · 25 questions Kit 6: Magic Trick Science: Physics and Psychology Mind, Attention & Magic · grades 6-7 · 25 questions Kit 7: Performance Planning and Misdirection Mind, Attention & Magic · grades 7-8 · 25 questions Kit 8: Cognitive Psychology Principles Mind, Attention & Magic · grades 7-8 · 25 questions Kit 9: Impossible Figures And Paradox Optical & Sensory Illusions · grades 5-6 · 25 questions Kit 10: Color And Brightness Illusions Optical & Sensory Illusions · grades 6-7 · 25 questions Kit 11: Auditory Illusions Optical & Sensory Illusions · grades 6-7 · 25 questions Kit 12: Taste Smell And Multisensory Illusions Optical & Sensory Illusions · grades 7-8 · 25 questions Kit 13: Cross Topic Connections Real World & Synthesis · grades 5-6 · 25 questions Kit 14: Real World Illusions In Medicine Safety Real World & Synthesis · grades 6-7 · 25 questions Kit 15: Misconceptions And Reasoning Real World & Synthesis · grades 6-7 · 25 questions Kit 16: Advanced Synthesis Real World & Synthesis · grades 7-8 · 25 questions
More ways to play
😄 Brain break
Meet the cast — the characters who teach this
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Fade The afterimage / persistence-of-vision — the visual trace left after a stimulus is removed (the foundation of animation, film, and many magic tricks) -
Stack The perspective trap — the geometric arrangement that misleads size and depth judgments (Müller-Lyer, Ponzo, Ebbinghaus, vanishing-point depth cues) -
Notch The impossible figure — the figure that locally reads as coherent but globally cannot exist (Penrose triangle, Escher staircase, blivet) -
Cue The auditory illusion — the sound-perception mechanism (Shepard tones, McGurk effect, phantom-melody, missing-fundamental) -
Loop The perceptual loop — the recursive / endless / barber-pole motion illusion (the mechanism that makes the brain see motion that can't end)