Yes, GraalOnline Classic has MFi controller support!
GraalOnline Classic on iOS does support controllers and is compatible with the MFI standard.
Welcome to GraalOnline Classic, a MMORPG with retro-look! Play with thousands of players world-wide, explore the world and use various weapons such as bombs and bow.
You can customize your character, chat with other players and send messages to friends.
The game comes with everything that made GraalOnline an evergreen of online games, including more than 15 music tracks.
You can now enter houses of other players who have this option enabled.
GraalOnline Classic supports MFi controllers.