Quadrix

# 🎮 Quadrix

**Stack blocks, clear lines, beat your high score.**

Quadrix is a fast-paced arcade puzzle game inspired by the classics, built from scratch in vanilla JavaScript. No dependencies, no bloat — just pure block-stacking action.

---

## 🎯 Four Game Modes

| Mode | Description |

|------|-------------|

| **A-TYPE** | Classic Marathon — speed increases as you level up |

| **B-TYPE** | Challenge Mode — clear 25 lines with garbage obstacles |

| **DAILY** | Same seed for everyone — compete globally every day |

| **ZEN** | No gravity, no pressure — just relax (Premium) |

---

## 🎨 Five Themes

**Free:** Classic (arcade), Neon (cyberpunk), Matrix (green CRT)

**Premium:** Pastel (soft), Monochrome (minimal)

---

## 🌍 Ten Languages

English · Français · Español · Deutsch · Italiano · Português · Русский · 日本語 · 한국어 · Nederlands

---

## 🎵 Features

- **3 music tracks** (Korobeiniki, Troika, Brisk) + reactive SFX

- **Particle effects** — explosions on line clears, screen shake on Tetris

- **High scores** — persistent, per-mode

- **Offline PWA** — play without internet, install on mobile/desktop

- **Gamepad support** — works with keyboard

- **Grayscale game over** — blocks fade to monochrome

---

## 🕹️ Controls

| Key | Action |

|-----|--------|

| ← → | Move |

| ↑ | Rotate |

| ↓ | Soft drop |

| Space | Hard drop |

| P | Pause |

| R | Restart |

| M | Change mode |

| V | Change music |

---

## 💡 Tips

- **Daily Challenge** uses the same seed for everyone — compare scores with friends!

- **Zen Mode** (Premium) removes gravity — place pieces at your own pace

- Try all 3 music tracks with **V** — each has a different tempo

---

*Made with ❤️ — zero dependencies, zero trackers, 100% client-side.*