Shift5: Portal Rubik

# Shift5: Portal Rubik **A mind-bending 2D puzzle inspired by Rubik's cube — with portals!** Shift5 features a "+" shaped board with 5 faces. Slide rows and columns to match numbers on each face. But here's the twist: tiles that exit one edge **teleport** to the opposite face through portals! ## 🎮 Features - **3 Grid Sizes:** 2×2 (beginner), 3×3 (classic), 4×4 (expert) - **4 Difficulty Levels:** Easy → Expert (5-80 scramble moves) - **3 Time Modes:** Blitz (fast), Rapid (balanced), Classic (unlimited) - **Daily Puzzle:** Same puzzle for everyone, every day - **ELO Rating System:** Track your progress across 8 ranks - **Star System:** Earn 1-3 stars based on move efficiency - **Hint System:** Stuck? Get a hint for the best move - **Statistics:** Track your solves, moves, streaks, and best times - **Keyboard Support:** Play with arrow keys on desktop ## 🕹️ How to Play 1. **Drag** any row or column to slide tiles 2. Tiles exiting the edge **teleport** to the connected face 3. **Match** all tiles on each face to the same number 4. Fewer moves = more stars! ## 🎯 The Portal Mechanic What makes Shift5 unique is the portal system: - The board is shaped like a "+" with 5 faces - When you slide a row/column past the edge, tiles wrap around to the opposite face - Master the portals to solve puzzles efficiently! ## 📱 Works Everywhere - **Desktop:** Mouse + keyboard (arrow keys) - **Mobile:** Touch + swipe - **Tablet:** Responsive design ## 🏆 Ranking System Progress through 8 ranks as you improve: - Beginner → Apprentice → Player → Strategist - Expert → Master → Grandmaster → Legend ## 📋 Technical Info - **Engine:** Vanilla JavaScript (no dependencies) - **File:** Single HTML file (~110KB) - **Storage:** localStorage for progress - **Audio:** Web Audio API (synthesized sounds) - **Offline:** Works without internet after first load --- ## 🏷️ Tags puzzle, logic, rubik, portal, brain-teaser, daily-puzzle, casual, html5, mobile-friendly, touch-friendly, strategy, minimalist, indie --- **Tips:** - Start with Easy 2×2 to learn the mechanics - Watch how tiles teleport through portals - Use the Portal toggle to visualize connections - Try the Daily Puzzle for a shared challenge!