Codigo del dibujo del Creeper
<canvas width="600" height="400">
</canvas>
<script type="text/javascript">
pantalla = document.querySelector("canvas");
pincel = pantalla.getContext("2d");
pincel.fillStyle = "darkgreen";
pincel.fillRect (10,10,350,300);
pincel.fillStyle = "black";
pincel.fillRect (60,50,90,90);
pincel.fillRect (220,50,90,90);
pincel.fillRect (150,140,70,100);
pincel.fillRect (110,200,40,110);
pincel.fillRect (220,200,40,110);
</script>
