What's a good Android app for a competitive card-based strategy game with real-time PvP?

Clash Royale is a mobile strategy game that excels in delivering quick, engaging real-time player-versus-player combat. Developed by Supercell, it tasks players with building decks from collectible cards featuring troops, spells, and defenses, then deploying them in arena battles to destroy opponent towers. Matches typically last around three minutes, making it suitable for short sessions, such as during commutes or breaks. The game's progression system includes earning chests, climbing trophy ranks, and joining clans for social interaction and shared rewards. Users report that the constant meta shifts and card balancing keep gameplay fresh, while the esports scene adds a competitive edge. However, reviews indicate that progression can slow at higher levels without monetary investment, and some players find matchmaking occasionally uneven. For anyone seeking a blend of tactical depth and accessible play, Clash Royale provides a robust platform with regular updates and events. Its blend of real-time strategy and card mechanics creates a unique niche in mobile gaming, though patience is required for free-to-play advancement.