Maps are the space or arena where players confront one another. This term is used almost exclusively when describing multiplayer games. Maps in the Counter-Strike series pit Terrorists against Counter-Terrorists in real-world style locations. In some map scenarios, players are awarded money for completing the map's objectives or by eliminating players from the opposing team. Arsenal scenario maps rewards players with new weapons for completing objectives.
Bomb Defusal (de)
Hostage Rescue (cs)
Arsenal: Arms Race (ar)
Arsenal: Demolition (ar)
Danger Zone (dz)
As of the July 1, 2014
update, Counter-Strike: Global Offensive introduced new map grouping as a way to further organize the maps for in-game and official competitive tournaments, as well as for use as mission parameters. The active duty and reserve groups contain official maps, while the operations group contains maps for the currently active operation. The lists may be subject to change by Valve at any time based on further testing and feedback.
The system was updated on the November 13, 2017
On the February 3, 2017
update, the map Dust II, originally in the Active Duty Group, was removed from Active Duty and made into its own map group, the Dust II.
Maps in the Active Duty Group are amongst the most popular and balanced maps available in Counter-Strike: Global Offensive. They consist entirely of Bomb maps. Major tournaments are encouraged to include maps from the active duty group to keep the system balanced starting with the 2014 ESL One Cologne tournament. Following the November 13, 2017
update, they are not available as a blanket map group search option for casual and deathmatch, and are instead a special category for maps in the Competitive game search, marked as the official competitive map pool.
A currently removed map group, maps from the Reserves group are among the less popular of players, but are very different and unique compared to the other maps, contrasting with the Active Duty group. They consist entirely of Bomb Defusal maps. They can still be played competitively in game and in tournaments with full statistics. The category was completely removed on the November 13, 2017
Defusal Group Delta
update, maps of the Active Duty group and those in the former Reserves group were merged and divided into two equal Defusal Groups, Delta and Sigma. The smaller of the two, it includes 4 maps.
Defusal Group Sigma
update, maps of the Active Duty group and those in the former Reserves group were merged and divided into two equal Defusal Groups, Delta and Sigma.
update, the hostage rescue maps in the Reserves Group were removed and made into their own map group, the Hostage Group.
All of the original Counter-Strike maps are playable on Counter-Strike: Condition Zero, but there is not necessarily a newer version. The Assassination and Escape scenarios were removed completely from Counter-Strike: Source and Counter-Strike: Global Offensive.
Custom maps are maps that were created by map developers outside of the official game development company. They are often created for custom game modes and feature mechanics that are not present in the base game. Most of the current official maps were at one time a custom map. Similar to the naming scheme used for official maps, custom maps use a prefix to identify what scenario they were created for. For example, "surf" denotes a surfing map, while "zm" is used for zombie maps. Some custom maps are exclusive to human players, while the bots cannot walk around effectively in some custom maps.
With the introduction of Operation Payback in Counter-Strike: Global Offensive, Valve has started to officially support the most popular custom maps for official game modes uploaded to Steam Workshop in matchmaking, even becoming official maps, as with the case of Cache.