Game Series or Families are a useful way to stretch your gaming time. Once you learn the base set of rules you can apply it to multiple environments with minor changes.
These can include both wargames and Euros
Crayon Rails
- Empire builder
- Eurorails
- Australian Rails
- British Rails
- India Rails
- Nippon Rails
- Russian Rails
- Iron Dragon
While the base rules each map has its own flavor.
A slower game but there is something about drawing your own network
CWB
Civil War Brigade Series
GCACW
Great Campaigns of the American Civil War