Anno 2070 is almost like its predecessor - only in 2070. However, I personally find it more difficult and more demanding when it comes to the higher levels of civilization. By that I mean the particularly complex production chains. I have to spend several hours of play, a "luxury" so be sure to be able to produce that all my citizens are constantly supplied with it, I nevertheless sufficient taxes do drive (no excessive overproduction) and to the transfer of the final product as well as all the necessary production goods in my "transport network" to include.
The deepwater replaced my view elements such as the Orient. Even without this addon is present in the game and provides many additional opportunities his time "makes sense" to invest in its civilization - for without the deep sea is stagnant at a point and can not continue to rise.
It's fun, captivating and, as always, a good balance. Although it is not from the stool skin me as it has realized no huge new ideas or bringing breakthrough innovations with them, then it is worth buying. By the time you finally jump into the 2070s but escapes the repetitive predecessor of Anno 2070. It is simply something new.
And do not worry, huge cyborg with laser weapons and wacky technologies of the future does not exist.
It's modern, it is new - but it remains on the ground and does not answer.