This blog post is brought to you by Karen Cheng a Program Manager on the Excel team. In today's post, we'll show you how the arcade game Tower Defense was created in an Excel spreadsheet (see a video of the game being played here ). In this game, creeps move toward your castle. You must defend it by placing towers which shoot at the creeps. The more creeps you kill, the more money you get to buy and upgrade your towers. To play, you'll need - · To download the...