In light of Microsoft's recent announcement to purchase Activision Blizzard, here are the biggest acquisitions in gaming history! For this list, were looking at the biggest corporate acquisitions in the gaming world in terms of how much they cost. Our countdown includes Facebook's acquisition of Oculus, Microsoft's purachse of ZeniMax, Take-Two's acquisition of Zynga, and more! Let us know in the comments whether you think these expensive acquisitions are good or bad for the industry.Check out more great gaming videos here:Top 22 Best Selling Video Games of Each Year (2000 - 2021):