Echo was a standout at the PAX Indie Megabooth last weekend. The concept is very cool: You have to infiltrate and explore a futuristic techno-palace. Every so often, the whole place reboots and goes dark. With each reboot, your past playthroughs “echo” as AIs that try to take you down using whatever tactics you used before the last reboot. It’s a visually arresting game with an interesting central idea—definitely one to keep an eye on. It’s coming to PC and console, no release date yet.