
Description: Bloons TD is a popular tower defense video game series developed by Ninja Kiwi. Players build monkey towers to pop balloons and prevent them from reaching the end of the map. The games feature cute graphics, strategic tower upgrades, and multiple difficulty modes.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Gemcraft Zero is a free tower defense action strategy game. Players build mazes and place towers to defend against waves of monsters. The goal is to harvest monster gems to craft powerful spells and upgrades.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API