Sawaru Butsuri: Touch Physics

What if gravity were twice as strong? Would the Moon fall? Sawaru Butsuri ("touch physics" in Japanese) is a game about fixing a world whose laws of physics have broken. Instead of memorizing formulas and then solving problems, you meet a broken machine first, run experiments, and arrive at the formula last. The formula stays with you because you built it to fix something. ▼ Repair Expedition — the main game A town has stopped. In five districts you will find thirty machines, each running on a real law of physics. A harbor whose bridge washed away: tune the launch power and angle so the cargo reaches the far shore. A frozen tank: discover that the temperature refuses to rise until the last of the ice has melted. A foggy lighthouse: set two whistles slightly apart and make a "beat" signal. One machine, one law — from friction, pulleys, pendulums and collisions to latent heat, thermal expansion, Doppler shift, interference, induction, half-life and matter waves. When you fix a machine, you earn its law and formula. Failed attempts stay in your lab notes, with the previous path drawn faintly so you can change one thing and try again. ▼ "Knobs that don't matter" Some of the controls were put there on purpose because they change nothing. Make the cart heavier and it still stops in the same place. Swing the pendulum wider and the period barely changes. Raise the X-ray tube current and the wavelength stays the same. Textbooks spend one line on these facts; here you discover them with your own fingers. ▼ What-If Physics A mysterious being called Delta has been breaking physical constants. With the Professor at your side you listen to the townspeople, pick the broken constant from three hypotheses (the wrong ones are the misconceptions real students have), take measurements, assemble the formula piece by piece, and repair 26 worlds. Each world ends with a short recall check so the formula is still in your hands when you leave. ▼ Discovery Physics A ten-chapter story from Galileo's tower to a modern laboratory. You take the measurements yourself and notice the law in your own data, the way it was first discovered. ▼ The Lab Experiment Lab: the formula is shown large; change its values and watch the motion change. Exam Lab: read an exam-style problem, enter the number you calculated, and that number becomes the experiment's parameter — the simulation grades you by how close the result lands (within 0.5% is PERFECT). Advanced Problems with situation diagrams re-roll their numbers every time, so memorizing answers does not work. ▼ What's inside • All 113 units of the Japanese high-school physics curriculum: 31 mechanics, 14 thermodynamics, 20 waves, 33 electromagnetism, 15 atomic — including inertial forces, simple harmonic motion, adiabatic processes, Kirchhoff's rules, RLC circuits, the Bohr model and nuclear reactions. • 30 repair machines, 26 what-if worlds, 10 story chapters, 30 advanced problems. • A formula book with about 145 annotated formulas, a formula-building calculator, spaced-repetition review, ranks and achievements, and a five-minute time attack. ▼ How it's built No ads. No account. No personal data is collected; the only network use is purchase processing. The first two machines of every district, the first three story chapters, the first three what-if worlds and the first three units of every lab field are included, with the rest unlocked by a single purchase. Sawaru Butsuri is made by SNAPLACE LLC, a small studio in Tokyo that builds a learning game for each school subject.