Hills and Rivers Remain is a video game developed and published by Square Enix and released for the iPhone and iPod Touch in North America and Japan, and additionally for DSIWare and cell phones in Japan. The game was released in November 2009, and has seen many map expansions released. The game is a strategy game that incorporates turn-based and real-time elements. It sees the player controlling several forts in a group of connected bases, choosing each round which base will create new forces that are used to attack enemy positions. Players navigate their characters across a map attempting to take their opponent's bases. The map is set up as a grid of connected forts, with each player controlling a section of the map. The game is turn-based; each turn the player selects one of their bases to be their main base. At the end of each turn, the main base spawns troops. The amount of forces created depends on the number of held bases. The player then sends these troops either towards their own bases to reinforce them or towards enemy bases in order to capture them. Troops do not travel instantly, allowing circumstances to change at the target base before they arrive. Capturing bases is done by comparing the attacking troops' numbers with the defending, with larger numbers winning. Some bases provide additional bonuses to the side that holds them, such as increased movement speed or attack power. The match ends when one player controls the entire map. Each match takes around ten to twenty minutes to complete. The player can face multiple enemies at once. Source: Wikipedia, "Hills and Rivers Remain", available under the CC-BY-SA License.