Counter-Strike: Global Offensive (also known as CS:GO) is a video game co-developed by Valve and Hidden Path Entertainment. It is the latest installment in the Counter-Strike franchise.
Many of the mechanics Counter-Strike had been still present there, so it wouldn't be very hard to accommodate.
Just like any Valve game made back then, CS:GO came with another version of the Source engine, which was also used by Portal 2. Thanks to this, the game would have better visuals, some new and redesigned maps and overall more immersive experience.
Fun gameplay, with (then) realistic gun sounds, which were greatly improved from the former games in the franchise, considering the limitations back then.
Even though you are no longer able to choose your own faction when selecting teams, the game goes for a more realistic approach. For example, in the Dust map, you will see IDF Counter-Terrorists with Arabic terrorists, which makes perfect sense since the location is set somewhere in the Middle East.
Most of the weapons re-appear here, along with some new exclusive weapons which are either replacement of older guns or completely new firearms.
Reasonably priced, just like any Valve game back then, at 14-15 dollars.
Ranking up wasn't very hard. In fact, you could learn from other players how to play if you didn't know.
Due to its' success, it helped to popularize the eSports genre of games, which at that time, the game was fair.
You were able to download skins and use them freely, just like the older games in the franchise.