Lena mentioned Gridland as part of the weekly trailer roundup, but I've been playing it today, and decided it was worth a full post and video playthrough. It's a match-3 game with survival elements - in the day, you match resources to collect them and build your base. At night, the enemies come out, and you have to match attacks and defenses to hold them back.

It's really very clever, and a lot of fun. As you build your base up, new resources will appear for you to match, and matching becomes more and more difficult. You can find Gridland for free in your web browser.