Looks like the Cold War version is stand alone. But, it seems like they could release expansions for this sort of game if they wanted to.
Maybe small 15 card non-random foil packs that cost $4 with 1 character card, 1 strategy card, and 5 resource cards for each side, plus one event card.
I could see buying several of these if they were available to increase the replayability of the game.
Edited by El_Tonio