A free app for Android, by Play Vertex.

Counter Strike CS Gun Game is a free FPS action game developed by Valve Corporation and published by Microsoft Studios. It is the second game in the series, following the 2012 release of Counter Strike: Critical Strike. The game takes place in the near future, in a world where the United States has been attacked by an unknown enemy. The player is given the choice of either side, with the objective of completing missions, eliminating enemies, and saving the world from an impending nuclear attack.

Gameplay

Counter Strike CS Gun Game offers a single-player campaign, which can be completed in either offline or online mode. In offline mode, the player can choose to play as a terrorist or a counter-terrorist. The player must eliminate all enemies in the level, eliminating all of the enemies before reaching the end of the level. In online mode, the player must compete with other players for the highest score.

Story

Counter Strike CS Gun Game offers a storyline that follows the events of Counter Strike: Critical Strike. In Counter Strike CS Gun Game, the player is given the option of either side, with the objective of completing missions, eliminating enemies, and saving the world from an impending nuclear attack.

The game begins with the player being attacked by an unknown enemy. The player must choose to fight for the terrorist or the counter-terrorist.