
Description: OpenTTD is an open source simulation and tycoon game where players transport goods and passengers by rail, road, air, and water. The goal is to grow your transport company by building transport routes and infrastructure.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Citybound is an open-source city-building simulation game and city simulator. It focuses on bottom-up emergent gameplay by simulating each individual in the city and their daily needs and activities.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API