He has created or contributed to several notable software titles, including Castle Infinity, Hooked on Phonics, Reader Rabbit and Half-Life.

In 2017, Random House published the first title in Ginns's book series, Samantha Spinner and the Super-Secret Plans.

[21] The initial launch featured twelve titles, including Marooned on the Moon, One of Our Giant Robots Is Missing, and Space Cats to the Rescue.

He wrote the original story treatment for Valve's Half-Life, as well as games for Hooked on Phonics,[26] Hasbro, Sesame Street, and Lode Runner.

Ginns has worked as a designer/producer with several independent game publishers, developing titles that include Crop Circles,[27][28] Pop!