Robin Parker: "Defense Grid 2 may not be the most original idea, and lacks any real character in its story and presentation, but it is the unique gameplay ideas that make it a success. Hidden Path have tried to inject a few new tweaks and provide a twist on your expected tower defense conventions, and they all add enjoyment and streamline your experience. Yes, it may lack depth with the lack of skill trees for your towers, and there is little variety in the enemies which you are constantly mowing down, but the lack of complexity allows it to be an easy title to jump in and out of with a friend, and kick some alien behind."
The Nerd Stash: "Everyone loves setting up killzones and laying waste to waves of enemies, so here are our picks for the best tower defense games ever."
It's also free to try on the mobile headset and Oculus Rift.
Tower defence games have become incredibly popular on iOS and Android devices over the last few years but they are also incredibly fun to play on your PC.
