Remanence

In the ruins of a world where technology has advanced to something indistinguishable from magic, you are a survivor of the apocalypse. The robotic cult that destroyed civilization using nanomachines is still in control — and you are going up against them armed with a sword and whatever nanomachine power you still carry. Master sword combat, develop your approach to the varied machines you face (some of them fast and nimble, some slow and devastating), and take the fight to the cybernetic overlord at the top of the structure you are climbing.