After a lackluster response from the Counter-Strike professional players to Counter-Strike: Source, Counter-Strike: Global Offensive stands as a shining example of games done right. Involving pro players and gathering feedback during development meant that the game felt as snappy as the original Counter-Strike mod, while providing a significant visual upgrade.
Not to mention new game modes, quickplay and other various features.
The game is an important milestone in gaming history and should be preserved.