geoDefense Swarm is on sale in Windows Phone Store under Xbox Windows Phone Deal Of The Week. This game now costs $1.99 down from its regular price of $2.99.
From our review of this game,
This is a tower defense-style game, and I am not a huge fan of tower defense games, but geoDefense Swarm is one of the most fun games I have played! The variety of towers is excellent, and you need to use every single type of tower if you want to win. The difficulty is perfect and remains challenging while not becomingÂ frustrating. The controls are natural and work well. In geoDefense Swarm, you actually create your own path by placing towers, which is a departure from the linear style of the original geoDefense. At first you may not like this change, but after playing it, I found myself enjoying the open-world style even more!