Humongous Entertainment was the original creator and developer of the Backyard Sports Series. They were founded in October 30, 1992 and was known for many educational games such as Freddi Fish, Pajama Sam, and Spy Fox. The Backyard Sports series was considered as one of their best selling games during late 90s and early 2000s.
Around 1996, Humongous was purchased by GT Interactive which later was brought out by Infogames. inc ( later used Atari name).
After the buy-out, their games were owned by Atari until Atari's bankruptcy. Now many of Humongous franchises are now under different companies such as Tommio Inc, Rebellion, and The Evergreen Group.
Backyard Sports is under The Evergreen Group.