The targets to be fulfilled are also the same, although you can also play capture the flag and domination. The truth is that it's basically a change of point of view because you can continue playing just like you used to, against other online players or against enemies controlled by the computer. The famous multiplayer game from another point of view.
However, the game we're talking about today has nothing to do with they legendary versions 1.6 or Global Offensive, but is an alternative development that will allow you to take part in online combats between you and the rest of players on a bidimensional plane, with a top-down point of view that will remind you of old games from the 16-bit gaming arcades and PCs from the 90s'. Many different, official and unofficial, versions have been developed for different platforms such as Windows, Android and now also Mac.
At this point, you should already know that one of the most famous multiplayer action games of all time is definitely the shooter Counter Strike.