Practice that feels like play
Questions, pictures, hints and explanations are original Otterly work for PP1 and Classes 1 to 5. This is not official exam preparation. Browse the chapters and worked examples to try a few questions together first.
Learning adventure / PP1 to Class 5
Space Academy
Solve. Build. Blast off.
Pick your class, answer original Olympiad-style maths and reasoning questions at your own pace, build a different ship for every grade, and fly to new places in space.
Free online, no account. Progress is saved on this device. Android app coming soon.
Play Space Academy
The full game: pick a class, answer questions, build your ship and explore.
Ready for your next big discovery?
Progress is local to this browser. There is no account or cloud sync, so clearing site data removes it and private browsing may not keep it. The game checks that saving works before you play. About privacy →
No rush, no pressure
Adjust sound inside the game, take regular breaks, and use full screen only if it helps. Browser zoom still works.
Local progress, no login
The browser game has no names, public profiles, chat or advertising. See the guide for parents and our privacy policy for details.