What's the best iOS app for a fighting game with deep combat and progression?

Shadow Fight 2 is a well-regarded fighting game that excels in delivering immersive combat and progression systems. Its core appeal lies in the fluid, skill-based martial arts battles, where players execute precise moves using intuitive touch controls. The game features a story-driven campaign with various enemies and bosses, complemented by RPG elements like character leveling, weapon upgrades, and armor customization. This progression system encourages repeated play, as users unlock new abilities and gear over time. Reviews indicate that many players appreciate the balanced difficulty and the fact that skill can often trump in-app purchases, making it accessible for dedicated gamers. However, some limitations exist, such as frequent ad interruptions between matches that can break immersion, and occasional bugs like download errors or discrepancies with cash back features on purchases. Despite these issues, the depth of combat and customization options make it a strong choice for anyone seeking a fighting game with substantial content and replay value on iOS.