Good question. Swordplay is a great little game that introduces players to the Reaction System and other game mechanics used in Two Hour Wargames.
2d6 Sword & Sorcery is an easier way to get started in Two Hour Wargames. Perfect for the whole family and not just wargamers. Easy to teach to younger players, 2d6 Sword & Sorcery games can be finished in as little as 20 minutes. This keeps the players interested and allows for campaigns where you can keep the same characters and play more than one game in one sitting.
But don't be fooled; 2d6 Sword & Sorcery is an easy to learn game, but still requires some strategy, as well as luck. Give it a try and watch for 2d6 Sci Fi Combat, the companion rules set for Modern and Sci Fi shoot 'em ups.