Each house and character has different genes. The skin tone is one of the gene attributes but is not linked to anything else in the game (so not part of the goal for the player). Even though the game was made in only 48 hours we did find it important to add some diversity. We would love to expand on that even more in a potential future version of the game. The actual winning goals that cumulate into the score are: Years you manage to survive, number of family members, average lifespan, oldest family member times the number of generations.