Hello,

Using my Laptop/tablet & team viewer I tried to continue a game I had started on my other computer at home.   My tablet has that square surface on the keyboard and two buttons to emulate a mouse it does not have a scroll wheel.

I was unable to find an option to zoom in / out on the map without the scroll wheel.   I suggest you add such as feature as not every computer user will have a mouse with scroll wheel.  

Some possibilities:   + (plus): To zoom in,   - (minus) to zoom out.     Also:   Ctrl + Left mouse button to zoom in,  Ctrl + right mouse button to zoom out.

I did see a +/- on the upper/rightmost corner of the map (which shows the reduced map) which I think were intended for this but it did not function.  Having a +/- key or ctrl + mouse key is faster than having to move the pointer on that area to click anyways.