Armchair Commander
iOS Download: https://apps.apple.com/us/app/id1454515001
Google Play: https://play.google.com/store/apps/details?id=com.fengyong.ArmchairCommander2
It might look similar to many games, but it’s got something that no (that I know of) other strategy game on the mobile market has:
That’s right, you can create your own maps and upload them for the world to play!
Aside from this, the campaign and conquests range from Europe to Asia, and content not officially included are widely available in the community maps section, including alternate axis victory scenarios, Chinese civil var, Vietnam war, etc…
Retro Combat 