When Jason West and Vince Zampella struck out on their own with Respawn Entertainment, the pair seemed primed to capitalize on their identities as the minds behind one of the most successful video game franchises to date. But in March, well before Respawn announced its first game Titanfall, co-founder West left the company. A new report claims that the departure was partly fueled by conflict with partner Zampella.

Vanity Fair cites an unnamed source that says "Vince felt that Jason was sabotaging the company." In response, Zampella told the magazine: "It's hard to work with one person for 15 years."

The note from Zampella upon West's departure cited "family issues" as the reason. "It is sad to see things come to an end, but there are times when change is best for growth, both personally and professionally," the note read. "I wish Jason the best and send my best wishes to his family."

West's departure doesn't seem to have detracted from Titanfall, which was one of our favorite games at E3.