Happy Squirrels review. Classic Game Room presents a CGRundertow review of Happy Squirrels from Chillingo for the iPhone. Happy Squirrels is one of those "build rooms, attract people, build more rooms" type of games, only with squirrels. It's also a gorgeous game, with a blocky art style that looks really cool. The gameplay is best described as a customer service simulator. You're adding rooms to a tree, with a bunch of different types to choose from. You pay for that with acorns, which you collect from your rooms. So theoretically, your existing rooms would fund additional rooms. Not exactly the case, unfortunately. This video review features video gameplay footage of Happy Squirrels for the iPhone and audio commentary from Classic Game Room's Derek.