I worked on a project that made a vest with controller vibration motors in it connected to a microcontroller. That microcontroller was connected by a serial -> USB converter and was controllable by the computer it was attached to.

Sadly, it wasn't for gaming. It was part of a study into the limitations of how much information humans can absorb at once, with the haptic feedback being tested as yet another input when there was a lot of auditory and visual input. I joked they should just use smell, but I don't think they wanted to subject the undergrad research subjects to weird smells.