1 Armageddon is a board game in which players fight a demonic invasion.
2 Galactic conquest is a board game in which players compete to control the galaxies by building fleets.
3 Marauder is a board game in which players compete to be the best pirates by upgrading their ship.
4 Valhalla is a board game in which players compete to reach Valhalla by increasing your fame and fighting larger battles.
5 Ragnarök is a board game in which players try to stop rampant gods.
For Marauder, I think it would be cool to be able to steal parts of people’s ships to upgrade your own. Or maybe there could be a battle mechanic, and the winner get to take a ship part?