Auto bet script for https://freebitco.in/?r=5690044

free_btc.js

var startValue = '0.00000001', // Don't lower the decimal point more than 4x of current balance
  stopPercentage = 0.001, // In %. I wouldn't recommend going past 0.08
  maxWait = 500, // In milliseconds
  stopped = false,
  stopBefore = 1; // In minutes for timer before stopping redirect on webpage


var $loButton = $('#double_your_btc_bet_lo_button'),
  $hiButton = $('#double_your_btc_bet_hi_button');

function multiply() {
  var current = $('#double_your_btc_stake').val();
  var multiply = (current * 2).toFixed(8);
  $('#double_your_btc_stake').val(multiply);
}

function getRandomWait() {
  var wait = Math.floor(Math.random() * maxWait) + 100;
  console.log('Waiting for ' + wait + 'ms before next bet.');
  return wait;
}

function startGame() {
  console.log('Game started!');
  reset();
  $loButton.trigger('click');
}

function stopGame() {
  console.log('Game will stop soon! Let me finish.');
  stopped = true;
}

function reset() {
  $('#double_your_btc_stake').val(startValue);
}

// quick and dirty hack if you have very little bitcoins like 0.0380001
function deexponentize(number) {
  return number * 1000000;
}

function iHaveEnoughMoni() {
  var balance = deexponentize(parseFloat($('#balance').text()));
  var current = deexponentize($('#double_your_btc_stake').val());

  return ((balance * 2) / 100) * (current * 2) > stopPercentage / 100;
}


function stopBeforeRedirect() {
  var minutes = parseInt($('title').text());

  if (minutes < stopBefore) {
    console.log('Approaching redirect! Stop the game so we don\'t get redirected while loosing.');
    stopGame();

    return true;
  }

  return false;
}

// Unbind old shit
$('#double_your_btc_bet_lose').unbind();
$('#double_your_btc_bet_win').unbind();


// Loser
$('#double_your_btc_bet_lose').bind("DOMSubtreeModified", function (event) {
  if ($(event.currentTarget).is(':contains("lose")')) {
    console.log('You LOST! Multiplying your bet and betting again.');

    multiply();

    setTimeout(function () {
      $loButton.trigger('click');
    }, getRandomWait());

    //$loButton.trigger('click');
  }
});


// Winner
$('#double_your_btc_bet_win').bind("DOMSubtreeModified", function (event) {
  if ($(event.currentTarget).is(':contains("win")')) {
    if (stopBeforeRedirect()) {
      return;
    }

    if (iHaveEnoughMoni()) {
      console.log('You WON! But don\'t be greedy. Restarting!');
      reset();

      if (stopped) {
        stopped = false;
        return false;
      }
    }
    else {
      console.log('You WON! Betting again');
    }

    setTimeout(function () {
      $loButton.trigger('click');
    }, getRandomWait());
  }
});

1. copy-paste the code into a browser console.
2. startGame() to start the game, stopGame() to stop.