Nuclear War is a collectible common-deck card game designed by Douglas Malewicki and originally published in 1965 that is a satirical simulation of an end-of-the-world scenario fought mostly with nuclear weapons. It is currently published by Flying Buffalo, and has inspired several expansions.

Flying Buffalo Inc. (FBI) is a game company with a line of role playing games, card games, and other gaming materials. The company's founder, Rick Loomis, began game publishing with Nuclear Destruction, a play-by-mail game which started the professional PBM industry in the United States. Loomis added games and players while introducing computer moderation and soon incorporated into the company Flying Buffalo Inc. The company published games in other genres, including card games such as Nuclear War and a role playing game called Tunnels & Trolls, a game similar to Dungeons & Dragons. Flying Buffalo acquired its 10,000th customer account number in 1980 and reached its largest size of 21 employees in 1983.