There are all sorts of adapters. I myself bought a PS2 controller adapter like years ago. I use it for pretty much emulation and every game on my PC that isnt a dating sim.
garyseven said: even simpler, just get a 360 controller, because Microsoft wrote official drivers for that for Windows.
Although it'd be best if you already had a 360 controller and just didnt know about the PC compatalbility lulz. A PS2 adpapter cost about 5$. And I think there are homebrew stuff to get your PS3 controller working on your comp too. Not that i tried it.
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