Description
EngliPlay – AI-Powered English Learning App | 18 Game Modes | React PWA
EngliPlay – AI-Powered English Learning App | 18 Game Modes | React PWA is a fully self-hosted Progressive Web App (PWA) that turns English learning into an addictive game. Powered by the OpenRouter AI workflow – which chains through 5 free large-language models with automatic fallback – it generates infinite, level-appropriate content so no two sessions are ever the same.
Buyers deploy on their own domain in minutes: add two free API credentials (OpenRouter + Firebase), run npm install && npm run dev, and the app is live. Zero monthly subscription costs for the app itself.
18 AI-Driven Game Modes
- Sentence Builder – drag & drop scrambled words into correct order
- Grammar Puzzle – multiple-choice error correction
- Speech Challenge – read aloud, scored by Web Speech API in real time
- Dictation Master – listen to TTS audio, type what you hear
- Story Weaver – fill blanks in an AI-generated short story
- AI Chat Roleplay – open-ended conversation with an AI English tutor
- Synonym Sprint – find synonyms before the timer runs out
- Spelling Bee – identify the correctly spelled word
- Odd One Out – spot the word that doesn’t belong
- Phrasal Verb Quest – fill-in verb + particle combinations
- Verb Voyager – choose correct verb tense per sentence
- Preposition Park – select in / on / at / by / with
- Article Alley – a / an / the selection
- Word Match – pair words with definitions or antonyms
- Quick Think (True/False) – grammar statements, race against the clock
- Context Detective – infer meaning from surrounding context clues
- Riddle Realm – solve English riddles with vocabulary clues
- Idiom Master – learn and identify common English phrases
AI Workflow & Architecture
- Calls OpenRouter API (5 free LLMs tried sequentially with auto-fallback)
- Structured JSON prompts per game mode – strict CEFR-level calibration in every prompt
- Deduplication hashing prevents repeating questions across sessions
- AI Chat session maintains local message history for coherent multi-turn dialogue
- Word of the Day endpoint generates daily vocabulary with pronunciation + example
Features at a Glance
- PWA — installable on desktop, Android, iOS; app shell works offline
- Google Sign-In via Firebase Authentication; guest mode uses localStorage
- Firestore cloud sync — progress follows the user across all devices
- Dark mode + light mode, persisted per user
- Sound effects (correct, wrong, timer, level-up)
- Fully responsive – mobile-first design
- Microphone access only on explicit tap; audio processed locally by the browser
- Structured Practice section with 14 curated lessons, each locked to appropriate levels
