Capcom Fighting Jam features characters from the Street Fighter II, Street Fighter Alpha, Street Fighter III and Darkstalkers series, as well as the single game Red Earth. There are four selectable characters representing each series, excluding original character Ingrid and the boss characters Pyron and Shin Akuma. Each character uses a fighting system from the game which determines the techniques they can use and their super move gauge. Ingrid uses her unique fighting style with her own techniques, for a total of six fighting styles.
The game consists of two-on-two endurance-style matches similar to that of Rival Schools: United By Fate. The player selects a pair of character and then begins a match with one character. In the Japanese version of the game, if their current character is defeated for one round, then the next round will begin with the other character. In the American version, the character can remain the same whether he or she wins or loses.
Source: Wikipedia, "http://en.wikipedia.org/wiki/Capcom_Fighting_Jam," available under the CC-BY-SA License.