Rap battles are debates on Debate.org that are formatted similarly to real life rap battles, except under the limits set by the round-by-round format and character limits of debates. Just like real life rap battles, they feature two users insulting eachother and bragging about themselves. 
Although rap battles usually fall into the above description, unique rap battles have appeared that focus on other topics or have purposes beyond bragging and put-downs against one's opponent. This includes a debate about whether Jesus fulfilled the Old Testament prediction for the messiah, formatted like a rap battle, and a rap battle that focuses on complementing rather than criticizing one's opponent. . Another interesting example is the Fancy Polite Gentlemens Rap Battle.