Magic abacus

Learn the Japanese soroban by running a market stall. Controls - Click or tap a bead to flick it, or drag it up or down Credits - Lesson texts: "Using an Abacus", Wikibooks contributors, CC BY-SA 4.0 - Sprites, sounds and particles: Kenney (kenney.nl), CC0 - Font: Noto Sans by Google, SIL Open Font License 1.1