What's the best iOS app for a casual strategy game you can play in short bursts with minimal ad pressure?

Battle Bag is a mobile strategy game from Voodoo that distills base defense mechanics into a simple, physics-driven format suitable for short play sessions. Players control a bag that produces units, aiming to overrun opposing bases across numerous levels. Its primary appeal lies in its low-pressure, incremental progression. The core gameplay loop involves upgrading unit types and managing their flow from the bag, which requires tactical timing but not intense concentration. Reviews indicate the ad implementation is generally considered fair, with optional video ads for bonuses rather than forced interruptions, aligning well with a casual experience. A specific feature supporting short-burst play is the straightforward level structure; most stages can be completed in under a minute, making it ideal for filling brief moments of downtime. However, some long-term players report balance issues following updates, where enemy health scaling can create frustrating progression walls at higher levels. The daily task system, while offering rewards, has also been criticized for including objectives that become impossible after full talent tree completion. For anyone seeking a undemanding strategy game that emphasizes chill, repetitive play over complex mechanics, Battle Bag serves its purpose well, despite some late-game friction.