Samurai Sums is a public games library by Numeracy Ninjas. No accounts, no adverts, no paywall: just focused number practice that works from phone to classroom screen.
Today’s launch games
Lightning Streaks + Factoria
Two games are live in v1, with the catalogue structure ready to grow by skill and topic.
Fast recall. Clean reps. Beat your own streak.
A rapid-fire fluency game for multiplication and division facts. Choose tables, set the streak window, and build speed with immediate feedback.
A factor strategy duel on a 12 by 12 number grid.
Place counters by making products from factor pairs. Connect four in a row while blocking your opponent and sharpening factor fluency.
Teachers can point pupils at a specific game and skill. Pupils can play immediately, with local best scores and settings kept only on their own device.
Live now
Rapid recall, streak pressure, and end-of-round diagnostics.
Live now
Factor pairs, four-in-a-row strategy, and local-only results.
