Godzilla: Monsters Attack! is a co-operative game based on the Godzilla franchise. At the start of the game, two monsters are chosen from a collection of monsters from the Godzilla universe. During the game, the monsters randomly move around the board fighting each other, fighting military units, and destroying cities. The players lose if the monsters cause too much destruction. To prevent this, players need to move around the board investigating various locations to uncover a plot. Once the players have done enough investigating, one of numerous plot cards is drawn. The plot provides a win condition for the players but also makes the monsters more powerful. The players must then race to meet the win condition before the monsters destroy Japan. Aside from uncovering and resolving a plot, players may also build and mobilize military units to prevent the monsters from damaging the cities and buy valuable time.