Mine has to be Dragon Quest: Rocket Slime, a DS spin off of the Dragon Quest series that sees you playing as a slime operating a tank and rescuing the people from your town. You run around the overworld, collecting items to use as ammunition and saving money to upgrade your tank. The art and music are just as great as you’d expect from the Dragon Quest series. It made fantastic use of the DS’s dual screens. It’s also written for a younger audience, so a lot of it is just really silly and fun! Try it out for sure, I’m so sad there’s no sequel :(
World in Conflict is mine. One of the best tactical RTSs that existed with stunning visuals. A nuke going off was one thing, but when your team decides to spend their support points at the same time on artillery, carpet bombing, and cluster bombs, it was a sight to behold.