Trok is set in the universe of another game - Nidavellir. I think that's a good product and marketing strategy. This is building an intellectual property and a brand. Attract your existing fans and supporters. Nidavellir is a game about dwarfs, and Trok is the popular card game played by dwarfs in taverns in the world of Nidavellir.  The cards in the game are numbered 1 to 7, with