[2] It is based on the Special Air Service, and includes some real-life missions such as the Iranian Embassy siege.

[3] It was released in North America as Terror Strike: Close Quarters Combat by Encore Inc.[1] The Regiment allowed up to four players for online multiplayer mode.

[8] Kuju collaborated with actual SAS veterans, including Rhett Butler and John McAleese, in creating the game.

[4] The latter acted as the technical advisor to ensure any portrayals of the SAS are done accurately[2] and as the in-game person who briefs players prior to a mission.

[10] Eurogamer also gave it a 5 out of 10 and mentioned "AI issues, laggy multiplayer and frustrating mission design".