Alright, game idea time!
Think of Battleship, 1v1, but one is the hero, the other is a villain, and there's a proper full-on story to really convince the player that it's all about the hero or the villain depending on which they go for, where they'll go "obviously I'll win in the end, that's how these things go" and that thought would usually come from the player that plays as the hero, where initially they'd get a false sense of security as they progress against the villain, but then things start to change as the villain gets more powerful and potentially get defeated by said villain player.
The purpose is to set a scenario and a proper story is given where the "villain" wins half of the time as well. The story should also be set up where the hero or villain is in the grey area of good and evil, where a discussion could definitely have from it.
Preferably this would be a full action-adventure game with cinematics and such, but I'll see what can be done in a tabletop version.
The inspiration came after clicking this video, which had the title "classical music but you're an anime villain who won the game":
https://www.youtube.com/watch?v=PAmhPY5szZ8
#gamedev