Greasy Fork is available in English.
https://www.youtube.com/watch?v=dQw4w9WgXcQ
// ==UserScript==
// @name Server Crasher
// @namespace zombs.io
// @match http://zombs.io/
// @grant none
// @version 1.0
// @author -
// @description https://www.youtube.com/watch?v=dQw4w9WgXcQ
// ==/UserScript==
document.querySelector("#hud-menu-settings > div").innerHTML = `
<div style="text-align: center; overflow: auto">
<button type="button" id="serverCrasher" class="btn btn-red" style="width: 90%">Crash server</button>
</div>
`;
document.querySelector("#serverCrasher").onclick = () => {
Game.currentGame.ui.getComponent("PopupOverlay").showConfirmation("Are you sure you want to crash the server?", 1e4, function() {
game.ui.onServerShuttingDown();
game.ui.components.PopupOverlay.showHint("Crashing server");
window.location = "https://www.youtube.com/watch?v=dQw4w9WgXcQ";
})
}