Do all PC games support controllers?

Most modern PC games support Xbox controllers natively via XInput. PlayStation controllers work through Steam's built-in controller support. Some older games may need third-party software like DS4Windows.

Is controller or keyboard/mouse better for PC gaming?

Keyboard and mouse is superior for shooters and strategy games. Controllers are better for racing, platforming, fighting games, and action-adventures. Many PC gamers use both depending on the game.

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