Recommend several fun stand-alone games, not too big and not too demanding on configuration.

I want to know what style you like. I have played some old games that don't need too high configuration. Some are not popular but chewy. I like being with you:

First-person shooter: half-life 2. This is not CS. CS is a MOD of this game, and then it grows stronger. Playing this game is similar to CS, with sci-fi style. Difficult but not difficult, the plot is great. It's worth a try.

Decryption search game: mysterious tower 1, 3 This is the kind of game that looks for clues to solve puzzles in the picture. Great style of painting. The painting styles of 1 3 are quite different, but they are all good. The story is also very interesting, and the plot is not procrastinating. If you haven't played this kind of game, I suggest you try the novice mode.

Third person action: devil may cry 3, 4. The game was played a few years ago, so it shouldn't be a problem to run. The protagonist Dante, the son of an angry demon, has two guns and a long sword, and his actions are cool. A resident game in my computer.

Sandbox game: riding and chopping: battle group. This one is smaller. I struggled to play a Jiangshan rhythm with a group of people. There is no main task, just normal life and fighting. You can stand on your own feet as king or be a minister. You can be a businessman or a robber if you like. MOD can also be installed. It is recommended to install shading.