Mirage is one of the ‘newest’ maps in the game. It was first created by Michael “BubkeZ” Hull in 2013 for Counter-Strike: Global Offensive. This might be a new map, but it was one of the most popular custom maps when it was first created.
Created by Salvatore “Volcano” Garozzo, Cache was originally terrorist sided results though this is different for the re-release. While it was first released in 2011 for CS: Source, they ported it to CSGO at the end of 2012.
Fair and honest matchmaking has always been a primary goal of Valve and their product CS:GO. With the player base being at the center of their decision making. So their decision to add prime matchmaking’ along with the trust factor matchmaking system came as no surprise.
The Inferno map first entered the Counter-Strike series with the original game and has been included in every game since. For CSGO, it was given a few visual improvements that didn’t change how the map was played from the CS: Source version.