The developer who yesterday threatened to kill Valve CEO Gabe Newell has resigned from Code Avarice, the studio he cofounded.

Paranautical Activity developer Mike Maulbeck yesterday aimed a volley of vitriolic tweets at Valve after the company's Steam digital distribution platform failed to correctly announce that his game had been released.

Valve responded to Maulbeck's tirade, which culminated in the death threat, by removing Paranautical Activity from Steam and closing the studio's administrator account.

As Steam essentially is, to borrow Maulbeck's own heated words, an "awful fucking monopoly", sales of Paranautical Activity were crippled.

Today, Maulbeck acknowledged his mistake and announced his resignation from Code Avarice.

“I’m really, deeply sorry that my short sighted, hot-tempered actions resulted in not only my own dreams and aspirations being destroyed but those of the entire team I work with,” Maulbeck wrote in a blog post. “I’m sorry that my statements made Valve and/or [Newell] uncomfortable and upset (rightfully so).”

Maulbeck said he'd sold the entirety of his stake in Code Avarice and its intellectual properties to other members of the studio.

“I feel it is my responsibility to step down from Code Avarice completely so that Steam has no reason to harbor any more ill will towards the company,” wrote Maulbeck. “And maybe even if we can’t see Paranautical Activity restored, at least future Code Avarice games may be allowed onto the platform.”

Maulbeck said he didn't intend to start a new indie studio. He said he has difficulty managing his temper and often can't help venting on social media. Maulbeck said he doesn't want to repeat the mistakes he made with Code Avarice.