Controller support is specific to a game, version and platform. A controller working with one title does not establish compatibility with another, even when both are action games or ports from PC.
What the distinction means
Apple advises checking for a controller icon on the relevant game page. Publisher support can provide additional details about supported devices or known limitations. A store-level indication is more useful than assuming a console-like interface guarantees the feature.
What to consider before playing
Before buying an accessory for one game, check the exact edition you use. Consider whether menus, text entry or particular actions still need touch input. If a controller connects to the phone but the game does not respond, those are separate layers of compatibility and should be investigated separately.
The useful takeaway
Controller support is specific to a game, version and platform. Before buying an accessory for one game, check the exact edition you use.
Sources and further reading
- Dead Cells — official information
- Stardew Valley — official information
- Apple Arcade and controller information