Zombies Cant Jump 2

Mexican gunman Pedro and his sexy girlfriend Juana found themselves in an uncomfortable situation. Just as they wandered through the desert heading to the nearby village to show there their gun skills, a zombie apocalypse broke out and now, instead of angry cowboys, they must protect themselves against hordes of bloodthirsty zombies. All they carry is a few boxes and their pistols, which they would never let use anyone else. The only luck is that these dumb zombies cannot jump. Build a tower from boxes, snipe the zombies that are approaching and buy upgrades. Have fun.