What are the fun stand-alone games on the computer?

Recommend fun stand-alone games: Call of Duty Series, Crysis Trilogy, Killing Prototype 1 and 2.

I. Call of Duty Series

The Call of Duty series produced by Activision is a classic in the history of shooting games. Call of Duty is the first game that allows players to experience the fighting experience brought into the squad. It also has the advantages of many shooting games, and it has a strong sense of substitution, which makes players feel immersive. And the plot is excellent, the picture sound is shocking, and many characters are very lively. Absolutely classic.

Second, the "Crysis Trilogy"

Is a shooting game with the theme of sci-fi action. The story takes place in the future, mainly against aliens. Combat weapons are advanced nanotechnology weapons. For example, armor can be invisible or thickened, which is a brand-new shooting game experience.

Third, "kill the prototype 1 and 2"

Action games, known as masterpieces and killing prototypes, can make you feel so cool. Here, you can run on the ground, climb to the top of the building quickly with your feet, and fly. Various movements, exciting and shocking pictures, an open world and a high degree of freedom. You can also kill people and kill zombies while doing tasks.

You won't worry that the protagonist is blocked by some large buildings, and you won't worry that the monster can't escape after being hit. He can do anything you want, although the plot is not very powerful, but the action makes up for this shortcoming.