Saga is a persistent online massively-multiplayer real-time strategy game. Every building you build, troop you buy, and piece of land you conquer remains with you as long as you play the game. That means every time you fight your friends, you won't have to rebuild your castle from scratch. It also means every time your buildings get damaged or your troops killed, they stay that way unless you repair or resurrect them. Troops gain experience over time, meaning that they move with you from battle to battle, improving their skills and finding exciting new armor and weapons to equip themselves with.