Microsoft reportedly spent $100 million developing the Xbox One controller, and tested out various versions of the controller with a wide range of features.
some of the features that Microsoft tested on the Xbox One controller included a built in projector, and even the ability for the console to emit smells.
Initially, Alam told us that Microsoft spent “hundreds of millions” of dollars on creating just the controller, not counting the rest of the Xbox One. When we asked for clarification (backed with wide eyes and an agape mouth), he told us, “I don’t want to go into specifics, but it’s over $100 million for sure. Between the tooling of the device, the investments we made in process technology, and the engineering work that went into it, we invested a lot to get this thing right.”
In the end, the final Xbox One controller has a few tweaks over the original Xbox 360 controller, $100 million certainly is a lot to spend of a few tweaks.