Three different 4X strategy games, three different solutions to "that inherent problem" of disappearing exploration

In fact, it's so persistent, that Amplitude Studios' co-founder and CEO Romain de Waubert de Genlis describes it as an "inherent problem", one his team have been attempting to solve since the first Endless Legend released back in 2014. "One of the X's, 'explore', disappears after a while," de Waubert de Genlis explains. You've discovered the map for one thing, so there is no more world to uncover. But 'explore' can also refer to something more abstract, your strategy becomes fixed.