Free Bitco Script

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 = 3; // In minutes

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 0.0000001
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());
	}
});