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Browser Game Slowdown

Universal Pointer Lock Toggle

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Browser Game Slowdown
// description  slow down browser games
// @match        *://*/*
// @grant        none
// @version 0.0.1.20260306235559
// @namespace https://greasyfork.org/users/1547770
// @description Universal Pointer Lock Toggle
// ==/UserScript==

(function() {
    let slowdown = 4; // 2 = half speed, 4 = quarter speed, 8 = super slow
    let frame = 0;

    const originalRAF = window.requestAnimationFrame;

    window.requestAnimationFrame = function(callback) {
        frame++;
        if (frame % slowdown === 0) {
            return originalRAF.call(window, callback);
        }
    };

    // Press "L" to toggle slowdown on/off
    let enabled = true;
    document.addEventListener("keydown", e => {
        if (e.key.toLowerCase() === "l") {
            enabled = !enabled;
            window.requestAnimationFrame = enabled
                ? function(callback) {
                    frame++;
                    if (frame % slowdown === 0) {
                        return originalRAF.call(window, callback);
                    }
                }
                : originalRAF;
        }
    });
})();