Ghost Squad Evolution is the arcade follow-up to the original Ghost Squad. It was developed and published by Sega and released in 2007.
In Ghost Squad: Evolution the player is a member of Alpha Unit, or members of the “Ghost Squad”, an unofficial unit of the anti-terrorist group, Multi-Operation-Program (M.O.P.). Non-playable characters include fellow M.O.P. members consisting of the Commander, who provides radio backup and pertinent advice to the player, along with the Bravo and Charlie Units who assist the player in suppressing the terrorist threat.
The rifle can be set from single shot, to 3 burst shot to automatic fire as well as special effects to suit the situation such as Night Vision, Flash Light for the mounted gun, and Scope for the sniper rifle. The gun also features an action button which is used to pull off special moves like hand-to-hand combat, as well as recoil effects on every shot fired.
Each mission contains multiple routes for the player to choose. Special events occur throughout the game depending on the route chosen, such as securing hostages, bomb removal, or providing friendly cover fire. The game is broken into 3 missions with 16 total difficulty levels. All 16 can be selected from the beginning. There are 14 costumes available for character customization, however, the costumes have no effect on gameplay. There are 25 different weapons.