Slitherine

Hi. I am new to this studio and range of games.
Can someone please confirm some things to me:
There is only one map.
There is only one AI campaign (Typhoon).
I play either as Axis (take Moscow) or Allied (defend Moscow).
After that, the only othr options are to play online against other players.

I have finished Typhoon as Axis and was expecting a next campaign or map/scenario (based on other games of this type That I have played).

There's only one map, but there are multiple scenarios that take place on that map. From the main menu, hit "Play." There are three tabs along the top of the next screen: AI, which is the screen you'll see when you first bring it up, "Face to Face," and "Online." Staying in the AI tab, hit "New," then scroll through the scenario options. Typhoon is checked by default, but if you scroll down you'll see "At the Gates," "Zhukov's Counterattack," and "The Moscow Campaign." (The Moscow Campaign continues past turn 5 all the way to the end of the game, turn 22. The other two scenarios pick up in the middle, more or less.)

Typhoon and the Moscow Campaign are the most popular scenarios. The campaign can take a long time, especially in online play, but it's worth it.

Yep, only one map and it's unbelievably awesome.

Read some more about the WWII history behind the game that is available through the game menu. It has a Day by Day diary of actual events that match the map/game closely, depending on your personal strategy of course.