When looking for free deuces wild video poker games online, there are many gaming sites to choose from. But before you start playing, it's important to know the basics of deuces wild video poker. In this game, the deuces or four two's can be used as substitutes to any card in any suit or rank. Because you can use deuce cards as wild cards for any other card, an online video poker game becomes more exciting. As a basic rule in this type of poker game, you never discard a deuce. If you lack the fifth card to form a straight flush in hearts, a spade, heart, diamond, or club deuce can be used as the fifth card. Take note that this basic rule applies to standard deuces wild video poker games. Aside from this basic rule, many online gaming sites add special rules, conditions, or betting limitations. So before you play a game, familiarize yourself first with the specific rules and conditions a specific gaming site may include.