Im curious if peolpe would / do use SQL for there games, or are there better suited DBs for games?

SQL is a language not a specific database. Do you mean MySQL? If so, people have certainly used it for commercial games.

-me

Using a database for real time storage (i.e. storing regular variables or quickly changing game data) is not recommended. A database should be treated like a more advanced data file - something you can easily store and retrieve many discrete pieces of data from with a wide range of criteria. If you are writing a game server, a database is an ideal place to save persistent information. On the client side you could use a database as a more advanced pak file, though most databases are of a server-client design, meaning users would have to install and be running a seperate database program. A good alternative is SQLite, an extremely compact embedded database, which allows you to have a single database file that it manipulated by your program (if SQLite is compiled in) or by the SQLite DLL.

It really depends on what it's used for. What are you planning on putting into your DB?