Age of War, also known as Risk Express or Camarades, is a quick-playing game of conquest. Fourteen cards are laid out at the start of the game, each showing the symbols required to claim this card, with the symbols separated into battle lines. The cards are grouped into sets, with sets varying in size from one to four cards.

A player starts their turn by rolling seven dice, the six sides of which show different symbols. They then select a card and uses the symbols rolled to conquer exactly one of the battle lines on this card (by placing the appropriate dice on that line). If they can do this, they then roll the remaining dice, ideally conquering another line; if they cannot conquer a line, they remove one die from play, the rolls again. Their turn ends when either they conquer every line on the card (in which case they claims it) or they no longer have dice available to roll.

Each card is worth a number of victory points. You can conquer cards owned by other players, but you need to conquer an additional line to do so. If a player has claimed all the cards from one set, however, those castles are secure and can no longer be stolen. What's more, these cards are now also worth more points.

When the last card is claimed, players tally the points from the cards they have claimed, and whoever has the highest score wins.