Both the survival and strategy genres have seen a rapid increase in popularity over the last decade, with many games merging the two formulas to create a new hybrid genre. Combining elements from city-building and base-management games with the intense survival mechanics often present in other games, these titles provide players with a unique experience of having to care for large groups of soldiers, settlers, or other characters. At the same time, the player must operate as chief strategist or governor in the game's scenario.