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Pro Bluetooth controller support
It supports the Xperia Play, Moga gamepads as well as HID gamepads. This way anyone can use the controller they like with the games in the emulator.
Pro Supports landscape and portrait orientations
Depending on how one wants to hold their device this emulator will work wither way making for a convenient emulator as far as orientation goes.
It costs 4,99€ to buy, which may be expensive as there are a few free options available.