That's just marketing speak, "functioning" is a weasel word trying to suggest, "fun to play," without actually making that claim. He can get away with saying "

That's just marketing speak, "functioning" is a weasel word trying to suggest, "fun to play," without actually making that claim. He can get away with saying "inputs are mapped" because the only inputs that can be made - touch ones - are mapped, x,y co-ordinates from screen to player. Inputs which don't exist at all - hover, keyboard - don't exist, so don't need mapped.