A LITTLE FOX. AN INFINITE UNIVERSE OF IDEAS.
Starbound Math.
Run a little. Wonder a lot. Let your curiosity power the stars.
Play your way. ← / → or A / D changes lane · Space jumps · P / Esc pauses. Touch buttons work too. Puzzle gates wait for you. You can skip the running stretch whenever you want.
For Bran’s grown-up · topics & progress
81 original problem templates generate new number variations. Each world has six core topic types and three reasoning extensions. The mixed route uses four core gates and two challenge gates per world. Olympiad trail is enrichment inspired by contest reasoning; it is not an official Olympiad syllabus or a complete Grade 4–12 curriculum. Grades 9–12 are suggested placements, and introductory calculus is an optional extension. Every grade is open immediately.
Worked solutions count as studied, not independently solved. Stamps record visits, and check marks record a world completed without revealing solutions. Answers, first-try attempts, and study counts are local to this browser; there are no accounts, ads, purchases, or multiplayer features.