The plots to XCOM were never very strong: it was the gameplay that set them apart. Gollup’s earlier games (the subject of the article) developed turn-based, grid-constrained tactical simulation out of board games; plot was just polish added to that. Using roughly the same mechanics, you command a death squad on search-and-destroy missions, terrorists doing direct action against the government, and, in Chimera Squad, cops. The story is just window dressing for the mechanics.