EngliPlay – AI-Powered English Learning App | 18 Game Modes | React PWA

EngliPlay – AI-Powered Gamified English Learning App

EngliPlay 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