• 100 levels with progressive difficulty from 2x2 to 8x8 grid
• Score system with multiplier that increases per level
• Energy system: Start with 5 energy, lose 1 energy when selecting wrong cell
• Integrated Google Play IAP with multi-language support
• Sound effects and haptic feedback (can be toggled on/off)
• Auto-save game and resume when returning
• Progress tracking: High score, Best level, Total games played
• Supports 2 languages: Vietnamese and English