#2
Steins;Gate is a sci-fi visual novel about a group of friends who accidentally invent time travel via microwave and spend most of the game watching that unravel badly. The writing is the reason it ranks this high—it's genuinely one of the best time-travel stories in any medium, not just games. Hardware demands are almost nonexistent; as a pure VN, it avoids CPU/GPU spikes entirely. I ran it on an older i3 laptop without a hiccup. The phone-trigger system and multiple endings give you a reason to replay, though the early hours require patience before the story locks in.