ANNO - ANNO is a city-building and economic simulation video game series, with real-time strategy elements.
Ansible - Radically simple configuration-management, application deployment, task-execution, and multi-node orchestration engine
Stronghold - Stronghold Crusader is a RTS game from the series from Stronghold.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
The Settlers Online - The Settlers is a free web browser based strategy game along with a gameplay that drops anywhere between Age of Empires and the online strategy style.
Puppet Enterprise - Get started with Puppet Enterprise, or upgrade or expand.