Civilization VI
Some would call it the ultimate turn-based strategy game, and who are we to argue? Civilization VI is an excellent way to lose a few hours, and with more expansive empires than ever before, a capable PC is needed to experience the game at its very best.
Appreciating that 4K performance is pretty easy, it's still uncomforable for Nvidia that this circa-£600 card is 10 per cent slower than a partner GeForce GTX 1080 Ti.