Far Cry 1 Gameplay: The tropical rain forest provides cover and concealment, of which the player and enemies can take advantage. Enemies react dynamically to the player's tactics and actions. If a lone mercenary spots a player, he occasionally runs for help, signaling reinforcements through use of flareguns. Enemies will work together to outmaneuver, outflank, surround, and provide suppressive fire, providing them a tactical advantage over the player, who, in turn, is able to spot and mark enemies on his minimap through use of special binoculars, which also grant the player the ability to listen to enemy conversations from afar, merely by pointing the binoculars in the direction of the enemies. The environment includes land, water, indoor and outdoor structures, all during various times of the day. The player has the ability to jump, run, crouch and lie down, and look in just about every direction. Sound plays an important part in the overall gameplay. For example, the general location of enemies can often be identified by hearing their footsteps. Throughout the game, the player encounters a variety of weapons from which to choose, including automatic weapons and grenades. Far Cry 2 Gameplay: The game features an open-ended experience. Players are able to ally with one or multiple factions, and to progress through the game world and missions as they see fit, resulting in a nonlinear style of gameplay commonly referred to as sandbox mode that allows the story to progress at their speed and in the order they choose. Players can use a range of vehicles, including cars, trucks, boats and hang gliders, to travel within the 50 km2 (19 sq mi) gameplay area. The playing styles range from head-on assaults to stealthy infiltrations and assassinations. The game takes place in a sprawling African landscape, with terrain ranging from desert to savannah to jungle.