Two or three of Costikyan's notable works include Toon, Star Wars: The Roleplaying Game, Pax Britannica, Paranoia and Violence: The Roleplaying Game of Egregious and Repulsive Bloodshed.

Additionally, Costikyan occurs as widely-published creator on a subject of bet on project & the role of games within culture. His essay, "I Have No Words and I Must Design" is widely understand as a conceptual approach to framing stake project.

Latterly, his studies use at times tended towards cellular phone gage project, & Costikyan has been writing & consulting for Nokia. In September 23rd, 2005, he resigned from his position at Nokia to observed a startup indie gage publisher Manifesto Games.

His invented works feature a fantasy genre parody Another Day, Another Dungeon & its sequel A single Quest, Hang on to a Dragons. The extra recent act, Foremost Contract, depicts (using lot dry humor) a huge sociological & economic changes that happen fallowing aliens arrive olympic games, & of these enterpriser's efforts to endure & produce the newly begin. Per Blade occurs as lively heroic tale.

Costikyan sleep in New York City. He occurs as frequent speaker at back industry cases including a Game Developers Conference and E³.