Over 7 defense tower types can be purchased by dragging and dropping them onto the map.

Maps vary across stages and include preset obstacles and pathways that can either impede or increase enemies speed.

[1] On August 19, 2009, Critical Thought Games released a bug fix update.

"I've been holding my breath for the last several weeks as Geo-Defense Swarm went through the review process - and now it's out!

[2] Several gaming sites have awarded Geo Defense Swarm high ratings.