This accessory isn't strictly for work. In fact, I can't come up with a single work use case for a gaming controller. If you are into gaming, on the other hand, it can be a lot of fun. 🙂
The controller is pretty straightforward with the buttons and joysticks you are used to. It is paired via Bluetooth, buttons are pressure sensitive, it is charged with a Lightning cable and battery life is said to be 40 hours or more.
Only iOS games in which the developer has built support for a gaming controller works with Nimbus. That said, there are hundreds of them. Minecraft, Minecraft Story Mode, Real Racing, Leo's Fortune, Alto's Adventure, Asphalt, Farming Simulator, Limbo, Stickman, and many others are supported. Fortnite is not supported yet. If you want to know if your favorite game is supported, there is a SteelSeries Nimbus Companion App on the App Store that lists them all.
Not all types of games benefit from a gaming controller. I think that flight simulators are a game genre that benefits a lot from the game controller. The controller makes it much easier to navigate while operating two guns and changing views at the same time. Games like Minecraft also are a smoother play once you have gotten used to the controller.
The SteelSeries Nimbus Gaming Controller currently is about 50 USD on Amazon. It works with iPad, iPhone and Apple TV.