River Matrix
Toby Campbell
River Matrix River Matrix turns finite-field mathematics into a flowing puzzle world. Every river is a stream of numbers, and every channel is a rule that reshapes them under a modulus: add, multiply, invert and more. You never tap a dull keypad. Instead you build gate pipelines, sort drifting numbers into clash-free lanes, match inverse currents, pour balanced branches, trace closed orbits and synchronize many rivers onto one target. Players build intuition for modular arithmetic, function composition, inverses, residue classes, cyclic orbits and synchronization, all the foundations of abstract algebra, made visible and playful. Learn by steering the current. Calm to look at, sharp to solve, and quietly teaching real ideas through play.