There is a variety of arcade games on IGDB, but there is no differentiation between the different arcade hardware. For example, Chunithm and maimai Finale are both on IGDB under the platform of simply "Arcade", despite Chunithm running on the Sega Nu 1.1 board, while maimai Finale runs on the Sega RingEdge 2.

While there are a lot of platforms that would have to be added should this change be made, I do believe that this change follows the mission of IGDB, as the website strives to be a collection of all relevant information for a game, and there are few things more relevant to a game than the platforms that it's accessible on.