Kingdom Rush, and the followup Kingdom Rush Frontiers, both have strictly optional consumables and permanent heroes you can buy, and are absolutely fantastic ga

Kingdom Rush, and the followup Kingdom Rush Frontiers, both have strictly optional consumables and permanent heroes you can buy, and are absolutely fantastic games available on Play, Amazon, iTunes, and in Flash (for free!) at http://www.armorgames.com/ http://www.armorgames.com/.