The CastleStrife game is a real-time strategy game in which players control one of the ancient or medieval civilizations. The goal of the game is to build a powerful empire that can stand up to other players or computer opponents.

The game supports both single-player mode and multiplayer mode. In single-player mode, players can play campaigns consisting of multiple missions. In multiplayer mode, players can compete against each other in various game modes such as deathmatch, domination and capture the flag.