What's a good iOS game for strategic tower defense with collectible heroes and player versus player battles?

Rush Royale: Tower Defense RPG is a strategic tower defense game that combines collectible heroes with player-versus-player (PvP) battles. In Rush Royale, you strategically deploy heroes and combine their unique abilities to defend your tower against waves of enemies. The game features a wide array of heroes to collect, each with distinct skills and upgrade paths, allowing for diverse deck-building strategies. You can compete against other players in real-time PvP battles, testing your strategic prowess and deck-building skills. The game also offers cooperative modes where you can team up with friends to tackle challenging waves of enemies together. To succeed, you'll need to evolve your cards and build different decks to be competitive, making it a skill-based game where strategic thinking is key. Winning battles earns you rewards to further enhance your heroes and tower defenses.