During this time, he helped out a friend programming a card game named Grand Slam Bridge for CYBRON Corporation which was released in 1986.

[4] He laid out the basic concept based on the GURPS system and began programming the isometric game engine.

"[7] Cain corroborated further in May 2023 that he left the company bitter after he was forced to work on Fallout 2 and did not get the bonus pay that was agreed upon after completion of the first game.

As project leader and lead designer he produced within 20 months the Dungeons & Dragons game The Temple of Elemental Evil for publisher Atari in 2003.

A. L." system into a FPS-RPG, but criticized the humor and recycling of too many story elements from the earlier Fallout games.

[9] He helped out programming the last Troika game, Vampire: The Masquerade – Bloodlines, a horror RPG for Activision in 2004.

[16] Since June 2020, Cain is no longer employed by Obsidian as a full time employee, but still works for them on the sequel to The Outer Worlds as well as for two other companies on a contract basis.