Web games tend to crap. Most of them follow the same formula where they slap you into a position of a leader of a country, planet, or empire. All of them tend to require you to build vast armies that takes days to prepare.
Duels is a somewhat of a different type of web game. One that requires no wait times to do play the game and allows you to challenge other players, even at the first level. It’s basically an RPG-style game with one-v-one style of PvP in mind. The strategy comes in by tuning your guy with the right skills and equipment, very similar to trading card games like Magic the Gathering.
Best of all, it’s free.
Stop reading, start playing.