"Multiplayer for the PC version of Ghostbusters is something that Threewave and [single-player developer] Terminal Reality always wanted to do," he told Big Download.
"When we looked at the resources necessary to pull off multiplayer on the consoles and the PC, it became a question of what could we do and still be excellent in our execution," Irish added. "Our focus was on making the console version the best that they could be."
Only the PlayStation 3 and Xbox 360 editions of Ghostbusters, which arrived in North American this week, sport online multiplayer, though the PC version is half their price. A separate developer, Red Fly, handled the PlayStation 2, Wii and Nintendo DS editions.