One incredible mechanic can make an entire game worthy of your time. The time loop of Outer Wilds, the social interaction of Dark Souls, and the titular portals of Portal are all incredible ideas pushed to their limit. A singular design objective is the centerpiece of the experience, letting everything else revolve around it. Middle-earth: Shadow of War's phenomenal Nemesis system is exactly that, turning a solid open-world fantasy adventure into an unforgettable one - and it's currently less than $3.
RELATED LINKS:
Get up to 90% off Mortal Kombat, Batman, and more in big WB Steam sale
Get the best Lord of the Rings games for 90% off
One of the best Lord of the Rings games is super cheap right now