Promo Spy vs. Spy game illustrated by Antonio Prohias.
There are 36 glossy, micro-perforated cards: 2 - 6 in 4 suits (although suits don't matter in the game), 4 each of 3 weapons (tanks, bombs and daggers), 2 wild cards and 2 WAR cards.
Basically the card game War with a little Rock-Paper-Scissors thrown in. Shuffle and deal out the deck so each player has their own card stack. Players turn over their top card simultaneously. Highest card takes both cards and winner puts both cards on the bottom of their card stack. Weapons beat numbers. Bomb blows up Tank; Tank runs over Dagger; Dagger cuts a Bombs' fuse. If the cards tie, you go to war: place 3 more cards face down and turn over the 4th card, which decides the winner of the trick. Wild cards beat numbers and weapons. If a WAR card is turned over, players must go to war. Keep playing until one player has won all he cards.
Variant rules for play with more than 2.