
Description: Sol Survivor is a tower defense game set in space. You build turrets and defenses to stop waves of alien enemies from reaching your base. With strategic building placement and turret upgrades, you defend your base across 40 levels featuring unique planets and enemies.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Innotoria Tower Defense is a tower defense game with simple graphics and gameplay. Players build various towers to prevent enemies from reaching the end of the path. There are multiple levels across different environments to beat. It's a free browser game good for passing short amounts of time.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API