"Rangers of Shadow Dark" is a skirmish level wargame where you have a Hero and up to 7 henchmen.
It is designed for solo to up to 4 players (total of 8 characters in a party).
It supports campaign play with character advancement.
Tabletop Simulator is an app on Steam that provides a virtual 3D table with full physics and you can do just about anything you could with a physical table plus more.
With it you can build the 3D terrain maps for playing games without the space and cost requirements.
Don't need 3D maps, just that you can.
I threw this together last night to see how hard it would be. It wasn't hard.
https://imgur.com/CQUC0Ay