Explore by Subject
12 subject areas · 240+ free interactive simulations · no sign-up required.
Physics
Classical mechanics, waves, electromagnetism, quantum physics, and relativity
Chemistry
Reactions, atomic structure, molecular properties, and electrochemistry
Biology
Cells, genetics, ecosystems, evolution, and the processes of life
Mathematics
Calculus, algebra, probability, linear algebra, and discrete math
Technology
Algorithms, data structures, cryptography, networking, and AI
Engineering
Structural analysis, circuits, control systems, and robotics
Superhero Science
Real physics behind superhero powers — Spider-Man, The Flash, Iron Man and more
Earth Science
Earthquakes, volcanoes, plate tectonics, weather, and the water cycle
Environmental Science
Ecosystems, climate modeling, carbon cycle, and biodiversity
Economics
Supply & demand, game theory, market dynamics, and behavioral economics
Competitive Exams
JEE, NEET, UPSC-CSAT, SSC, Banking — exam-aligned physics and math sims
Games
Physics-based browser games — Newton's Cannon, Lunar Lander, Circuit Builder
Learning Paths
Science Foundations
Core intuition across physics, chemistry, and biology
- 1Pendulum Motion
- 2Acid-Base Titration
- 3Photosynthesis
- 4Wave Interference
Modern Physics
The revolutionary physics of the 20th century
- 1Special Relativity
- 2Quantum Tunneling
- 3Nuclear Fission
- 4Electric Fields
Tech & Engineering
Apply math and science to real-world systems
- 1Sorting Algorithms
- 2Hydraulic Systems
- 3PID Controller
- 4Machine Learning