This is one of the best tower defense games ever made. You have to set up you towers to stop Aliens from taking power cores. What makes this game so great is the different set ups and paths you can build with your towers. There are also levels that have layered paths so you really have to pay attention. Unlike a lot of tower defense games, Defense Grid requires good strategy more than just putting a lot of towers down.

TOWER D-D-D-DEFENSE GAMES MAKES ME C-C-C-C-C-U; but in all honesty this game is the true essence of TD games, but it does it a crispy masterpiece perfection. Every aspiring TD game should strive to grab fundamentals from this game.

Epic
+ Xbox Series X Retrocompatible