„Impulse” is a quick-playing 4X (explore, expand, exploit, and exterminate) game set in space with the game board being composed of cards that have actions on them. Players also have cards in hand, and in addition to featuring one of ten possible actions, these cards have a color (red, yellow, blue or green) and a size (1, 2 or 3, as indicated by the number of icons on the card). Each card also has six edges, and these edges connect adjacent cards in the hex-shaped playing area.