There are a large number of other game genres, such as shooters, platformers, vehicle games, fighting, strategy, war, simulation, and puzzle. The difficulty in identifying a particular game's genre lies in the multiple ways in which game genres are classified. For example, you can have a TPS game that is also a massively multiplayer online game (MMOG) and, because it has a large number of puzzles, it can be added to the puzzle genre.
This is not something to be terribly concerned about. It is important to be able to identify what the key components of your game will be so that you can select the best available game engine for your project.
