Devastation is a first-person shooter video game, developed by Digitalo Studios and released in 2003.
The game takes place in an impoverished, dystopian near-future Earth, pitting an underground group of rebels against an oppressive, all-powerful mega-corporation. It is an action-oriented first person shooter based on the Unreal Engine 2.0, that focuses heavily on team-based gameplay in both single-player and multi-player.
Devastation features standard first-person shooter gameplay, comparable to that of Unreal 2, as the game is based on Unreal 2's game engine. Notably, the game can be played in either "arcade" or "tactical" mode. Arcade mode features fast-paced action similar to that of many first person shooters, while tactical mode features slower gameplay more akin to tactical shooters such as Counter-Strike.
The single-player game focuses heavily on team-based gameplay. The player can have a squad of up to several NPCs following them at any given time. Each NPC can be issued one of 4 orders: attack, defend, follow, or stop. NPCs ordered to attack can independently make their way from the beginning to the end of the level without any guidance from the player, although they will stop moving and wait for the player to catch up if they get too far ahead of the player. In the game's initial levels, the game ends if any NPC squadmate is killed, but squadmate health regenerates fairly quickly to prevent this aspect of gameplay from being too frustrating.
The first 1/3 of the game features linear levels, with the player's goal being to make it from the start of the level to the end. About 1/3 of the way into the game, the player acquires a cloning machine that allows them and their squad members to respawn from death an infinite number of times. At this point, the only way to "lose" the game is to allow the enemy to capture and destroy the player's cloning machine. All levels from this point on are based on a capture the flag style of gameplay, with the rebel and Grathius teams starting on opposite sides of a non-linear level, each one tasked with capturing the other's cloning device.
Devastation also features 28 different weapons, divided into 8 categories: melee, pistols, sub-machine guns, assault rifles, sniper rifles, squad support weapons, and miscellaneous weapons.
Source: Wikipedia, "Devastation (video game)", available under the CC-BY-SA License.