Successful video game franchises can have numerous games in their series, but sometimes companies make some odd choices in the naming conventions for sequels. The upcoming Mortal Kombat is a good example of this, as are other games such as Kingdom Hearts. For many of these, the game developers are clearly trying to do something innovative and make each new game stand out, but it can cause players a headache later on when trying to see what order the games came in and how to play them chronologically.