Are toy story games developed by pixar or a third party studio?

The current evidence does not provide information on the development of Toy Story video games. Pixar Animation Studios is primarily a film production company and is not generally known to develop video games internally. Most Toy Story games have historically been produced by external game studios licensed by Pixar or Disney. However, without explicit source confirmation, we cannot definitively state which studios are responsible for any specific Toy Story titles. Further verification from reliable industry or company statements would be required to confirm the development origins of Toy Story games.