It’s a long-running tabletop war game. It’s played using a person’s collection of miniatures. Basically, you know how D&D can be played with miniatures, usually to enhance the experience and to add a visual element to help the players know what’s going on? It’s like that, except the entire game is played with those miniatures, and it revolves entirely around battles instead of roleplaying.

There have been many video game adaptations of various genres throughout the years, but the main thing is the tabletop game.