samieazubike/oyono-mobile

Learn Urhobo the playful way. # Urhobo: River Kingdom 🦜 A playful, endless language-learning game for **Urhobo** — the Southwestern Edoid language of Delta State, Nigeria (1M+ speakers) — built with Expo for Android, iOS and web. Kids and adults paddle up a never-ending river of levels, guided by **Ọmoko** the parrot (ómoko = parrot). ## What makes it special - **Endless levels.** Levels are *generated*, not authored. Each one is a session of mini-game rounds composed from templates × a verified content pool, with difficulty bands that unlock categories, tone marks, typing, decoy tiles and timers. There is no final level by construction (`lib/engine/levelGen.ts`). - **A real Urhobo keyboard.** Standard keyboards can't type Urhobo. Ours has first-class **Ẹ** and **Ọ** keys and every digraph (CH, DJ, GB, GH, GHW, HW, KP, NY, PH, RH, SH, VW) as a single key; long-press a vowel for its high tone (á). Used in typing rounds and the free practice pad (`components/keyboard/UrhoboKeyboard.tsx`). - **The game learns from the gamer.** A Leitner spaced-repetition system schedules every word (`lib/engine/srs.ts`) while a weakness map watches *which letters* trip you up — mix up ẹ/e and letter-hunt rounds start targeting exactly that (`lib/engine/adaptive.ts`). All learning data is on-device, timestamped and JSON-serializable, ready for a future cloud sync. - **Kid & adult modes.** Kids get pictures, memory-flip games and no lives; adults get tone-mark rounds, typing, timed rounds and hearts. Switchable in Profile. - **Record-your-own pronunciation.** No TTS exists for Urhobo, so the Word Book lets players (or a native-speaking relative) record each word with the mic. Recorded words unlock listening rounds. - **Verified content only.** 420+ words and expressions, every entry sourced from A.O. Ukere's *Urhobo–English Dictionary* (1986; web ed. Roger Blench 2005), Omniglot, or ubiquitous usage (Migwo/Vrendo). Each item carries its `source` field (`lib/content/words.ts`). ## Mini-games match · reverse match …