The GameSir Pocket Taco is an interesting, single-purpose game controller built for retro gaming on iPhone via emulation. Its low price makes its tradeoffs worth it for nostalgia seekers.

Since Apple enabled the use of emulators on iPhone, the search for the perfect emulation controller began. We've seen many mounts, attachments, and standard controllers, but the Pocket Taco takes a different approach.

Instead of simply being a capacitive set of buttons like Gamebaby , the GameSir Pocket Taco is a full Bluetooth game controller that slips onto your iPhone. Of the two options, I like GameSir's approach better since I don't always want my iPhone to have a controller attached.

That said, there are some limitations to this style of controller.…