Left 4 Dead was so busted at launch that it forced a sequel barely 12 months later: "such a broken thing that nobody wanted to touch it"

Left 4 Dead.

The creator of Left 4 Dead says the reason its sequel came around so quickly is that the original game was so broken nobody at Valve wanted to work on it any longer.

In an interview with Game Developer, Valve veteran Chet Faliszek discussed the speedy turnaround between Left 4 Dead, which launched in 2008, and Left 4 Dead 2, a full sequel that arrived barely a year later. According to Faliszek, the reason for the turnaround is that "Left 4 Dead was such a broken thing that nobody wanted to touch it."