A TamperMonkey extension to reverse Diep.io's keybinds. This includes 1-8 for stat upgrades, movement using arrow keys and WASD, and C+E.

Reverse Binds for Diep.user.js

// ==UserScript==
// @name         Reverse Binds for Diep
// @namespace    http://reddit.com/user/haykam821/
// @version      0.2
// @description  A TamperMonkey extension to reverse Diep.io's keybinds. This includes 1-8 for stat upgrades, movement using arrow keys and WASD, and C+E.
// @author       /u/haykam821
// @match        http*://diep.io/*
// @grant        none
// ==/UserScript==

window.onload=function(){console.log('Yay, Reverse Binds for Diep is alive.');};

var change = {38:40,40:38,37:39,39:37,49:56,50:55,51:54,52:53,53:52,54:51,55:50,56:49,87:83,83:87,65:68,68:65,67:69,69:67};

function changeCodes(e){
    if (change[e.keyCode]!==undefined) {
		code = change[e.keyCode];
    } else {
		code = e.keyCode;
    }
	return code;
}

window.onkeydown=function(e){window.input.keyDown(changeCodes(e));};
window.onkeyup=function(e){window.input.keyUp(changeCodes(e));};