Quoted from CrazyLevi:Gottlieb Street Line, and (spoiler alert) it was NOT a success, in any measurable way - the games lacked pizzaz, they didn't earn, they didn't sell, and the experiment was abandoned after a year or so.
One of my fave games of all time is a Street Level (not Line) game: Title Fight. One of the most fun games I have ever played. You are correct that they were not a success on route in their time, but a couple still hold up well, IMHO, including Deadly Weapon.
BTW: If anybody out here has a Deadly Weapon or a Title Fight for sale, pm me!