Kalam Labs - Twitch for Science
Stronghold - Stronghold Crusader is a RTS game from the series from Stronghold.
MathCrunch - Learn math stress free
Tropico - Tropico is an Addictive, Strategy, Construction and Management, City Building, Sandbox and Single-player Simulation developed by PopTop Software.
SpeQ Mathematics - SpeQ is a small, extensive mathematics program with a simple, intuitive interface.
Age of Empires - Age of Empires is the critically acclaimed, award winning Real Time Strategy (RTS) game with a legacy spanning over 20 years and nearly a dozen titles in the franchise.