[8][9][10] Skaggs founded Tetragon, Inc. in 1993, a small company that developed a console game called NanoTek Warrior, released in 1997 through Virgin Interactive.

[11] After Westwood was acquired by Electronic Arts in 1998, Skaggs oversaw the creation of a series of hit real-time strategy games as vice president and Executive Producer at EA.

His first major RTS project was Command & Conquer: Red Alert 2, released in 2000, followed by its expansion pack Yuri's Revenge in 2001.

The last major EA RTS game helmed by Skaggs was The Lord of the Rings: The Battle for Middle-earth, released in 2004.

He also led teams making other games at Zynga including The Ville, Treasure Isle, and the mobile version of Empires & Allies.